Answer:
the formula v = f×lambda.
v= 4.25× 5.6
therefore speed is
23.8 meters per second
For normal weight students, regular physical activity is unnecessary." True O False
Answer:
The answer is False
Explanation:
to keep the body active and going in the good state
Answer:
False ....Even for a normal student , in order to maintain the fitness they should exersice ...
To calculate the frequency of a electro magnetic wave what do you need?
plzzzz mark me brainliest if it helps you
What is the “water cycle?”
Answer:
uhm
Explanation:
the water cycle describes the continuous moving of water on earth with steps called evaporation condensation precipitation the other one
Answer:
The water cycle consists of Evaporation, Convection, Precipitation and Collection :3
Explanation:
:3
What type of motion does this graph represent?
Which of the following is NOT considered an invasion game or sport?
A. Lacrosse
b. Golf
c. Football
D.
Capture the Flag
Answer:
Golf
Explanation:
Golf is NOT considered an invasion game or sport
an ocean current moving from the equator toward a pole is
Answer:
A warm current
Explanation:
Answer:
A warm current is moving away from the equator towards the poles. The water in a warm current is warmer than the surrounding water.
-7 and a number 12 units to the rights of -7
Answer:
5
Explanation:
Move 12 spots to the right from -7 on the number line.
What is the mass of a baseball with a velocity of 30 m/s and a momentum of 6 kg•m/s?
Answer:
0.2 m/s
Explanation:
Momentum= mass x velocity
6 kg/m/s divided by 30 m/s= 0.2 m/s
What gravitational acceleration does an object experience at the instant it is released at
one Earth radius above the surface of the Earth?
A) 1.3 m/s^2
B) 2.45 m/s^2
C) 4.90 m/s^2
D) 9.7 m/s^2
Answer:
B) 2.45 m/s^2 ( not sure i just search it )
What is the velocity of an 80 kg person skating across the ice with a kinetic energy of 16, 000 joules?
Answer:
V = 20 m/s
Explanation:
Given the following data;
Mass = 80kg
Kinetic energy = 16,000 joules
To find the velocity;
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Substituting into the formula, we have;
16000 = ½*80*V²
16000 = 40V²
V² = 16000/40
V² = 400
Taking the square root of both sides, we have;
V = 20 m/s
Water uptake to the atmosphere occurs through the processes of evaporation and transpiration from plants where it condenses to form clouds. Clouds release the water through precipitation. During a summer of extreme drought, what can we expect to happen to the surface groundwater stored in ponds and lakes?
a. Water levels will increase because there is more precipitation
b. Animals won't drink as much to save water, so water levels remain the same
c. Water levels will increase because there are more evaporation and transpiration
d. Water levels will decrease because there are more evaporation and transpiration
water level will decrease because there are more evaporation and transpiration
PLS ANSWER FAST WILL GIVE BRAINLEST!!!!!!!!!
what is the relationship between speed and kinetic energy? (In other words, how are the two related to one another?) Explain.
Answer:
The kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
Found it on the internet
Explanation:
Hope this helps dude
The linear expansivity of a metal p Is twice that of metal q. When these metals are heated through the same temperature, their increase in length is the same. Calculate the ratio of the original length of p to that of q
Answer:0-------0
do we have options?
Explanation:
Thermal equilibrium is when objects are not at equal temperature
True or false
Answer:
false
Explanation:
equilibrium means equal
therefore thermal equilibrium means when objects are at equal temperature
If the wheel then slows to rest in 9.46 s while making a quarter turn, calculate the magnitude of its average angular speed during that time.
Answer:
0.16 rad /s
Explanation:
Given that :
Time, t = 9.46 s
Quarter turn = 1/4 rev
θ = wt
w = angular speed `. ; t = time in second
1 rev = 2 pi
θ = 2pi
1/4 θ = 1/4 * 2pi = pi/2
θ = wt
pi/2 = w * 9.62
3.14 = w * 9.62 * 2
3.14 = 19.24w
w = 3.14 / 19.24
w = 0.1602040
w = 0.16 rad /s
several Non-Examples of mechanical weathering are?
Answer:
The removal of rock particles by wind, water, ice, or gravity,mining, carving, carving
Explanation:
when you apply 1.5 V across unknown ohmic resistor you observe current of 1.5 mA. You expect to observe current of _____ mA when you apply 3 V across the same resistor.
0.3 mA
3 m A
30 mA
300 mA
Other:
Answer:
answer is 3mA
Explanation:
since V=IR
and 1.5v=1.5mA x 1ohms
definitely
it's gonna be directly proportional
means 3v=3mA
#3
The speed of sound is 346 m/s. If a sound wave travels at a frequency of 55 Hz, what would its wavelength be?
#4
If the same wave in question #3 travels through water with the same wavelength, at what frequency will it be traveling? (speed of sound in water = 350 m/s)
Answer:
The first one is 6.3m or 6.25m
The second is 60 m/s
Explanation:
It's almost always difficult to select healthy foods at a fast-food restaurant. O True O False
Answer:
yesExplanation:
because its most likely to have chucks than heathy foodThe2 archer uses a force of 120 N. The force acts on an area of 0.5 cm2 on the archer's fingers. . Calculate the pressure on the archer's fingers.
Answer:
Pressure = 24000 N/m²
Explanation:
Given the following data;
Force = 120N
Area = 0.5cm² to meters = 0.5/100 = 0.005 m²
To find the pressure;
Pressure= force/area
Pressure= 120/0.005
Pressure = 24000 N/m²
Therefore, the pressure on the archer's fingers is 24000 Newton per meters square.
The pressure on the archer's finger will be [tex]P=240 \ \frac{N}{cm^2}[/tex]
What will be the pressure?Pressure is defined as the normal force applied to the particular area. The formula is given as
[tex]P= \dfrac{F}{A}[/tex]
Here
F= Force applied
A= Area at which the force is applied
Now it is given that
F= 120 N
A= 0.5 [tex]cm^2[/tex]
Now by putting the values in the formula we get
[tex]P=\dfrac{120}{0.5} =240\ \frac{N}{cm^2}[/tex]
Thus the pressure on the archer's finger will be [tex]P=240 \ \frac{N}{cm^2}[/tex]
To know more about Pressure follow
https://brainly.com/question/991185
10 turns of wire are closely wound around a pencil as shown in the figure. when measured using a scale as shown, the length of total turns is obtained 25mm. then a) What is the thickness of the wire? b) Express the thickness of the wire in centimetre.
please write correct answer
Answer:
A. 2.5 mm
B. 0.25 cm
Explanation:
A. Determination of the thickness of the wire.
Number of turns (n) = 10 turns
Length (L) = 25 mm
Thickness (T) =?
T = L / n
T = 25 / 10
T = 2.5 mm
Thus, the thickness of the wire is 2.5 mm
B. Determination of the thinkness in centimetres (cm).
Thickness (in mm) = 2.5 mm
Thickness (in cm) =?
Recall:
10 mm = 1 cm
Therefore,
2.5 mm = 2.5 mm × 1 cm / 10 mm
2.5 mm = 0.25 m
Therefore, the thickness of the wire in centimetre (cm) is 0.25 cm
A bowling ball rolls down a lane of length 19.2 m in a time of 3.0 s.
What will be the ball's average velocity?
Answer:
6.4 m/s
Explanation:
19.2/3=6.4
What could you do to increase the electric potential energy between two negatively charged particles by a factor of 16?
Answer:
Increase the charge of one particle by a factor of 16
Explanation:
How much kinetic energy does 150kg boulder have if it is rolling down a hill with a speed of 5m/s? (KE = 1/2mv2) 375J 310J 1875J 1500J
Answer:
1875J
Explanation:
KE = 1/2mv2
=0.5 × 150kg × 5m/s^2
= 1875J
Therefore, the kinetic energy of the boulder is 1875J.
a bomb is dropped from a plane fying at a constant horizontal velocity at an altitude of 300m. where is the bomb after 2 seconds?
Answer:
it will be almost on the ground
Explanation:
i say this because the boom is heavy and its going down fast so it will not be in the air or on the floor it will be akmost o the ground.
Does gravity affect kenetic energy
Answer:
Yep.
Explanation:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. Gravity will pull the object down. So yes, gravity affects kinetic energy.
Answer:
Kinetic energy is energy an object has because of its motion. A ball held in the air, for example, has gravitational potential energy. If released, as the ball moves faster and faster toward the ground, the force of gravity will transfer the potential energy to kinetic energy.
Explanation:
What is the acceleration of a bike that starts from rest and after 10s is traveling 20m/s?
Answer:
10meter per second square
Explanation:
since the bike is from rest, the initial velocity is zero and the final velocity is 20m/s . so by formula a=v-u/t
a = 20-0/10
a = 2
A laser produces light at 5.32x10-7 m.
What is the frequency of the light?
A. 1.77x10-6 Hz
B. 1.60x1011 Hz
C. 1.88x107 Hz
D. 5.64x1014 Hz
Answer:
D
Explanation:
speed = frequency x wavelength
speed of light in vacuum is 3.0 x 10^8
wavelength = 5.32 x10 ^-7
3.0 x 10 ^ 8 = 5.32 x 10^-7 x frequency
frequency = 5.63909 x 10^14
round it off = 5.64 x 10^14 Hz
thus the answer is D
hope this helps please mark it
Which of these materials is permeable?
The form of energy commonly called light is transferred by
_____ waves
Answer:
it would be electromagnetic waves
