The force of the string at the bottom is greater than the weight of the ball. The correct option is B.
What is Net force?When two or more forces are acting on the system of objects, then the to attain equilibrium, net force must be zero.
A girl at a state fair swings a ball in a vertical circle at the end of a string.
When the ball is at the bottom . the force acting will be
The tension in the string , T = mass x centripetal acceleration + Force of gravity
So, T = m x ac + mg
Thus, the force of the string at the bottom is greater than the weight of the ball.
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The ability for a muscle to work against a resistance for an extended period of time is.
Muscular Endurance refers to the ability for a muscle to work against a resistance for an extended period of time
Endurance :-
Perseverance is connected with the capacity to perform work over a drawn out timeframe. Youngsters, for instance, can play effectively for hours. Endurance can be impacted by a singular muscle, a muscle bunch, or the complete body. Muscle perseverance mirrors the capacity to support rehashed muscle compression and is connected with muscle strength.
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This diagram shows a wire with a current flowing through it. What do the circles and arrows around the wire represent?
A) They represent an electromagnetic field.
B) They represent an electric field.
C) They represent attraction between charged particles.
D) They represent a magnetic field.
Which vector is the sum of the vectors shown below?
A.
B.
C.
D.
Answer:
B.
Explanation:
The addition of vectors is commutative, so adding in any order will lead to the same result; just draw a straight line from the starting point to the tip of the final vector.
What are Quartz-crystal Clocks??
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Don't spam.
Answer:
It is a piezoelectric material. It produces and accumulates electric charge when subjected to mechanical stress
Gold-198 has a half-life of 2.7 days. Complete the table for an initial sample size of 200 grams
25.1 grams are still present after 8.1 days. When the Gold-198 has a half-life of 2.7 days.
What is radioactivity?The act of producing radiation spontaneously is known as radioactivity. This is accomplished by an unstable atomic nucleus that wants to give up some energy in order to move to a more stable form.
The half-life of the gold =2.7 days
Sample size = 200 grams
N is the left amount after the given time =?
Constant of rate = 0.26
The rate constant is found as;
[tex]\rm \lambda = \frac{0.693}{t^{\frac{1}{2}}} \\\\ \lambda = 0.256 \ days^{-1}[/tex]
The amount after the given time;
[tex]\rm N=N_0 \times e^{-\lambda t} \\\\\ N = 200 \times e^{-0.256 \times 8.1 \ days} \\\\N=25.1 \ gm[/tex]
Hence,25.1 grams are still present after 8.1 days.
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Kylie has a modern quarter with a mass of 5.623\,\text{g}5.623g5, point, 623, start text, g, end text and an older silver quarter with a mass of 6.24\,\text{g}6.24g6, point, 24, start text, g, end text. What is the combined mass of the quarters
The combined mass the quarters, given that the modern and old quarters has masses of 5.623 g and 6.24 g respectively is 11.863 g
Data obtained from the questionMass of modern quarter = 5.623 gMass of old quarters = 6.24 gCombine mass =?How to determine the combine massThe combine mass of the quarter can be obtained by simply adding the masses of the individual quarters together. This is illustrated below:
Combine mass = mass of modern + mass of old
Combine mass = 5.623 + 6.24
Combine mass = 11.863 g
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A 500. gram cart with a speed of 0.360 m/s hits a barrier and bounces back with a return velocity of -0.240 m/s. what is its change in momentum?
a. 60.0 kg*m/s
b. 0.300 kg*m/s
c. -0.300 kg*m/s
d. .0600 kg*m/s
e. -.0600 kg*m/s
The change in the momentum of the cart,given the data is 0.06 Kgm/s (Option D)
What is momentum?Momentum is defined as the product of mass and velocity. It is expressed as
Momentum = mass × velocity
Change in momentum = mass (final velocity - initial velocity)
How top determine the change in the momentumFrom the data given above, the following data were obtained:
Mass (m) = 500 g = 500 / 1000 = 0.5 KgInitial velocity (u) = 0.360 m/sFinal velocity (v) = -0.240 m/s.Change in momentum =?Change in momentum = m(v + u) (renounce)
Change in momentum = 0.5 (-0.24 + 0.36)
Change in momentum = 0.5 × 0.12
Change in momentum = 0.06 Kgm/s
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A 10 kg ball Is released from the top of the hill how fast is the ball going when it reaches the base of the hill
The velocity of the ball going when it reaches the base of the hill will be 5.5 m/sec.
What is velocity?The change of distance concerning time is defined as speed. Speed is a scalar quantity. It is a time-based component. Its unit is m/sec.
The complete question is;
A 10 kg ball is released from the top of a hill. How fast is the ball going when it reaches the base of the hill? Approximate g as 10 m/s2 and round the answer to the nearest tenth.
hy = 2 m
h = 0.5 m
The given data in the problem is
m is the mass of block = 10 Kg
u is the initial velocity of fall = 0 m/sec
h is the distance of fall = 2.5 m
g is the acceleration of free fall =10 m/sec²
v is the hitting velocity of =?
According to Newton's third equation of motion;
[tex]\rm v^2=u^2+2g(h_2-h_1) \\\\ \rm v^2=0+2g(h_2-h_1) \\\\ v = \sqrt{2g(h_2-h_1)}\\\\ v = \sqrt{2 \times 9.81 \times (2-0.5)|}\\\\ v =\sqrt{2 \times 9.81 \times 1.5 } \\\\ v = 5.5 \ m/sec[/tex]
Hence, the velocity of the ball going when it reaches the base of the hill will be 5.5 m/sec.
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The human nerve cells have a net negative charge and the material in the interior of the cell is a good conductor. if the cell has a net charge of - 7.85 pc, what are the magnitude and direction (inward or outward) of the net flux through the cell boundary
The magnitude and direction (inward or outward) of the net flux through the cell boundary is - 0.887 wb.m².
What is flux?
Flux describes any effect that appears to pass or travel through a surface or substance.
The magnitude and direction (inward or outward) of the net flux through the cell boundary is calculated as follows;
Ф = Q/ε
where;
Q is net chargeε is permittivity of free spaceΦ = (-7.85 x 10⁻¹²)/(8.85 x 10⁻¹²)
Φ = - 0.887 wb.m²
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Describe a situation in which friction changes the direction of a moving object.
Consider a person trying to push a large crate across a floor, as in the diagram. As they apply a force to push the crate along the floor in one direction, a frictional force is generated in the opposite direction.
[tex]study \: well.....[/tex]
Analyze the relationship between total internal reflection and the critical angle.
Answer:
5.15 when the angle of incidence is equal to critical angle the angle of reflection is equal to 90 if the angle of incidence is bigger than the critical anger the reflected ray will not emerge from the medium but will be reflected back into the medium this is called total internet reflection
Explanation:
hope it's helpful
If a hyperpolarizing graded potential and a depolarizing graded potential of similar magnitudes arrive at the trigger zone at the same time, what is most likely to occur
The likely outcome when a hyperpolarizing and a depolarizing potential of similar magnitudes arrive simultaneously at the trigger zone is the cancellation of charges.
What is membrane action potential?Membrane action potential refers to differential electric charges within and outside of a given cell.
Hyperpolarization refers to a differential membrane potential of a cell associated with a negative charge, whereas depolarization is associated with a positive charge.
In conclusion, the likely outcome when a hyperpolarizing and a depolarizing potential of similar magnitudes arrive simultaneously at the trigger zone is the cancellation of charges.
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The wave equation says that a wave's speed is equal to its wavelength times its _________________.
Answer:
Frequency
Explanation:
speed = wavelength * speed
A 7.00 kg bowling ball is held 2.00 m above the ground. using g = 9.80 m/s2, how much energy does the bowling ball have due to its position? 68.6 j 137 j 274 j 960 j
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The potential energy of the bowling ball due to its position above the ground is 137.2 Joules. Therefore, the correct answer is 137 J The correct option is (b).
Given:
mass (m) = 7.00 kg
gravitational acceleration (g) = 9.80 m/s²
height (h) = 2.00 m
The potential energy of the bowling ball due to its position above the ground, we can use the formula for gravitational potential energy:
Potential Energy (PE) = mass × gravitational acceleration × height
The potential energy:
PE = 7.00 × 9.80 × 2.00 m
PE = 137.2 Joules
So, the potential energy of the bowling ball due to its position above the ground is 137.2 Joules. Therefore, the correct answer is 137 J (b).
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which statement illustrates how progress in engineering has affected the natural enironment
The statement that illustrates how progress in engineering has affected the natural environment is extracting mineral resources with modern mining equipment removes fertile topsoil.
What is the Natural Environment?The natural environment may be defined as anything that can be present in the surroundings of living entities whether it is a biotic or abiotic factor.
The utilization of contemporary mining tools terminates fertile topsoil and admiringly impacts the fertility of the soil. It is tough to rebuild topsoil and modern mining tools constantly damage soil fertility.
Advancement in engineering has influenced the natural environment and mining is one of the most accepted measures of this.
The complete question is as follows:
Extracting mineral resources with modern mining equipment removes fertile topsoil.Mining companies use modern equipment to extract mineral resources more efficiently.Modern mining equipment has improved the health and safety of workers.Modern mining practices provide materials that can be used for technological advances.Therefore, it is well described above.
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A man walks 30 m to the west, then 5 m to the east in 45 seconds.
a. What is his displacement?
b. What was his total distance walked?
c. What is his average velocity?
Answer:
a. Displacement=30²+5²=925= 30.4m
b. Total distance=30m+5m=35m
c. V=s/t. = 30.4/45=0.6m/s
The sun is considered a G2V star. What does the "V" indicate in this designation? Question 21 options: That the sun is a main sequence star. That the sun has an absolute magnitude of 5.0. That the sun is a member of the fifth generation of stars in the universe. That the sun is a star visible from Earth with the unaided eye.
The function of V" in this designation is A. That the sun is a main sequence star
What is the sun?It should be noted that the sun is the star at the center of the solar system.
In this case, the function of V" in this designation is that the sun is a main sequence star
In conclusion, the correct option is A.
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In the homecoming game, the field goal kicker attempts to make a 47 yard (43 m) field goal. He kicks with an initial velocity of 20 m/s at an angle of 60° The field goal posts are 3 m high. Does he make the field goal? Explain your answer.
Given the data from the question, the goal kicker did not make the field goal.
To determine if the goal kicker makes the field goal, we shall determine the distance (i.e range) travelled by the ball after it was kicked by the kicker. This can be obtained as follow:
How to determine the range Initial velocity (u) = 20 m/sAngle of projection (θ) = 60 °Acceleration due to gravity (g) = 9.8 m/s²Range (R) = ?R = u²Sine(2θ) / g
R = 20² × Sine (2×60) / 9.8
R = 400 × Sine 120 / 9.8
R = 35.3 m
Since the distance travelled by the ball is 35.3 m and the goal post is situated 47 yard (43 m) away.
Thus, we can conclude that the goal kicker did not make the goal as the ball did not get to the post which is 47 yard (43 m)
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4. Calculate the acceleration of a body which starts from rest and travels 87.5 m in 5sec.
What do velocity, acceleration, force, and displacement, have in common?
Velocity, acceleration, force, and displacement, have magnitude and direction (ie vector quantity) in common
What is a vector quantity?This is a which have both magnitude and direction. Example include:
VelocityDisplacement ForceAccelerationMomentWeightWhat is a scalar quantity?This is a quantity which has magnitude but no direction. Example include:
WorkEnergySpeedMassTimeDistanceFrom the above, we can see that velocity, acceleration, force, and displacement, have magnitude and direction (ie vector quantity) in common
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grade 9 psyhics giving brainly
Answer:
B
Explanation:
If the liquid leaked, there would be less pressure and thus less force which is only reflected by one answer choice.
Please answer of this question
Answer:
[tex]\frac{\pi }{15}[/tex]m
Explanation:
At 10am, the minute hand and hour hand are ' 2 hours apart', since the minute hand is at 12pm and hour hand is at 10am.
Angle between the two hands = 2/12 * 360
= 60°
Arc Length = [tex]2\pi r(\frac{60}{360} )[/tex]
= [tex]2\pi (0.2)(\frac{1}{6} )\\= \frac{\pi }{15} m[/tex]
momentum? b. A student claim that he can produce linear momentum in carrom men with the help of a striker. Is his claim true? Explain. [2] inciple of conservation of linear momentum. momentum ? b . A student claim that he can produce linear momentum in carrom men with the help of a striker . Is his claim true ? Explain . [ 2 ] inciple of conservation of linear momentum .
The claim of the student is True, he can produce linear momentum in carrom with the help of b.
To explain the principle of linear momentum we can say that:-
According to the principle of conservation of momentum, if two things collide, the total momentum before and after the impact will be the same if no external force occurs on the colliding items.
Linear momentum conservation When the net external force is zero, the momentum of the system remains constant, as expressed mathematically by the expression.
Initial momentum = final momentum
Formula of Linear momentum is:-
Linear momentum = mass × linear velocity
P = M × V
The law of momentum conservation is based on Newton's third rule of motion, which states every force has a corresponding and opposing reciprocating force.
So we understand that Principle of Linear momentum. The initial momentum is equal to final momentum after collision hence, the carrom striker follows the concept of linear momentum.
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The vertical component of 9N is found to be four-thirds of the horizontal component.
a) Find the horizontal component.
b)Find the magnitude of the vector
Answer:
a) Let horizontal component be h
4/3×h= 9
4h = 9x3
h = 27/4
b) Magnitude = √ [9²+ (27/4)²
= 11.25
a truck of mass 1500kg is moving with a constant speed of 10m/s . what is the translation kinetic energy of the truck?
The translational kinetic energy of the truck is 75000 Joules (J). The correct answer is 75000 Joules (J).
Given information:
Mass of the truck (m) = 1500 kg
Speed of the truck (v) = 10 m/s
The translational kinetic energy (KE) of an object is given by the formula:
KE = (1/2) × m × v²
where:
KE is the translational kinetic energy,
m is the mass of the object,
v is the speed of the object.
The translational kinetic energy of the truck:
KE = (1/2) × 1500 × (10)₂
KE = (1/2) × 1500 × 100
KE = 75000
KE = 75000 Joules (J)
So, the translational kinetic energy of the truck is 75000 Joules (J).
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how is the sun bigger from the moon
The Sun is 400 times larger than the Moon, yet since it is 400 times further away from Earth than the Moon, they appear to be the same size in the Earth's sky.
The image shows positivle and negative charged particles bouncing around. Which state of matter is most likely represented in the image?
Answer:
Gas Solid Liquid Plasma
Explanation:
Answer:
plasma
Explanation:
plasma has charged particles and ions and electrons floating around
Water is to a river as ____________ is to a wire
Answer:current
Explanation:water flows down a river. Current flows down a wire (in the drude model, at least)
Answer:
electricity
Explanation:
the efficiency of a canot engine is more when the temperature of the sink is increased by 50%
The efficiency of a carnot engine is more when the temperature of the sink is increased by 50% is 33.33%
What is Efficiency?The efficiency is defined as the work done by the engine divided by the heat supplied.
Work done is the difference between the heat supplied and heat rejected.
So, efficiency η = 1 - T₁/T₂
Where T₁ is the lower temperature and T₂ is the higher temperature.
The temperature of the sink is increased by 50%. If the lower temperature is T₁, then the higher temperature will be 1.50T₁
Substitute the value into the expression , we get
η = 1 - T₁ / 1.5T₁ x 100 %
η = 33.33 %
Thus, the efficiency of the carnot engine is 33.33 %
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1. our entire solar system orbits around the center of the about once every 230 million years. 2. the milky way and andromeda galaxies are among a few dozen galaxies that make up our . 3. the sun appears to rise and set in our sky because earth once each day. 4. you are one year older each time earth about the sun. 5. on average, galaxies are getting farther apart with time, which is why we say our is expanding. 6. our is moving toward the star vega at about 70,000 km/hr.
(1) Our entire solar system orbits around the center of the Milky Way Galaxy about once every 230 million years.
(2) The milky way and andromeda galaxies are among a few dozen galaxies that make up our Local Group.
(3) The sun appears to rise and set in our sky because earth rotates once each day.
(4) You are one year older each time earth orbits about the sun.
(5) On average, galaxies are getting farther apart with time, which is why we say our universe is expanding.
(6) Our solar system is moving toward the star vega at about 70,000 km/hr.
1.0 Revolution of the solar systemOur entire solar system orbits around the center of the Milky Way Galaxy about once every 230 million years.
2.0 Milky Way and Andromeda galaxiesThe milky way and andromeda galaxies are among a few dozen galaxies that make up our Local Group.
3.0 Rotation of the Earth
The sun appears to rise and set in our sky because earth rotates once each day.
4.0 Revolution of the EarthYou are one year older each time earth orbits about the sun.
5.0 Expansion of the universeOn average, galaxies are getting farther apart with time, which is why we say our universe is expanding.
6.0 Motion of the solar systemOur solar system is moving toward the star vega at about 70,000 km/hr.
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