Answers
Answer:
3a) k = 500 N/m
3b) x = 0.05 m
3c) F = 2.5 N
4a) W = 120 N
4b) W = 5 N
4c) W = 0.2 N
Explanation:
3a) Force; F = 10 N.
Extension; x = 20 mm = 0.02 m
Formula for spring constant is;
K = F/x = 10/0.02
k = 500 N/m
3b) Force is now; F = 25 N
Since k = 500 N/m
Then x = F/k = 25/500
x = 0.05 m
3c) extension is now 5 mm = 0.005 m
Thus; F = kx = 500 × 0.005
F = 2.5 N
4a) Formula for weight is;
W = mg.
g = 10 N/kg
m = 12 kg
Thus; W = 12 × 10
W = 120 N
4b) Mass; m = 500 g = 0.5 kg
Thus; W = 0.5 × 10
W = 5 N
4c) mass; m = 20 g = 0.02 kg
W = 0.02 × 10
W = 0.2 N
Related Questions
An ipod uses a standard 1.7 volt battery. How much resistance is in the circuit if it uses a current of 0.03 amps
Answers
Answer:
R = V ÷ I = 1.5V ÷ 0.01A = 150Ω
Explanation:
150 is the answer:)
Can someone please help me with science
Answers
Answer:
The mass is one of the factors affecting gravitational field strength.
Weight (Force) = mass × gravitational field strength
= 0.10 × 10 (10 is the fixed gravitational field strength on Earth)
= 1.0 N
what are the types of federal court cases
Answers
Answer:
More specifically, federal courts hear criminal, civil, and bankruptcy cases. And once a case is decided, it can often be appealed.
Explanation:
I hope this helps and pls mark me brainliest! Thank you :)
Answer:
There are many types of federal court cases. Examples are civil, criminal, bankruptcy. There are also special "military courts" for cases related to military crimes like desertion, etc.
Explanation:
Why is the global temperature increasing? Explain the science behind it.
Answers
Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.
a microwave with a frequency of 5.0 x 10 2 hertz has a period of
Answers
Hello,
QUESTION)✔ We have: T = 1/f; with T in s, and f in Hz
T = 1/5,0 x 10² Hz T = 2,0 x 10⁻³ sThe period of the microwave is therefore 2 ms.
Answer:
2.0x10^-11
Explanation:
T=1/f
T=1/5.0x10^10
T= 2.0x10^-11
What has gravity led scientists to understand?
Answers
Answer:
Gravity is a non-contact force that was observed famously by Sir Isaac Newton, who watched an apple falling from a tree to the ground. ... Newton was the first to realise that gravity existed in space and it was the force which holds the Moon in orbit around the Earth and planets in orbit around the Sun.
Answer:
Newton's theory had prove that all objects, as small as an apple and as large as a planet, are subjected to gravity. Gravity helped to keep the planets rotating around the sun and creates the ebbs and flows of rivers and tides.Describe the movement of sperm in the female reproductive system. State the different structures that it must pass in order to meet the egg for successful fertilization. plzz help me
Answers
Answer:
After a male ejaculates, many sperms move to the upper vagina (via contractions from the vagina) through the cervix and across the length of the uterus, reaching the fallopian tubes. Here they will meet the egg cell ready to be fertilized
What is the atomic number the atom shown?
A. 3
B. 13
C. 14
D. 27
Answers
Answer:
13
Explanation:
Brainlest pls
Answer:
B-13
Explanation:
The protons listed in the atom are 13, and the protons are the same number as the atomic number.
2.Write the formula associating energy with power
3.Write the formula associating potential energy with height.
4. By substitution of the formula on question 3 for the formula in question 2, rewrite the formula for power.
(PLEASE PLEASE HELP ASAP ILL MARK BRAINLIEST)
Answers
Answer:
[tex] Power = \frac {mgh}{time} [/tex]
Explanation:
2. Power can be defined as the energy required to do work per unit time.
Mathematically, it is given by the formula;
[tex] Power = \frac {Energy}{time} [/tex]
3. Potential energy can be defined as an energy possessed by an object or body due to its position.
Mathematically, potential energy is given by the formula;
[tex] P.E = mgh[/tex]
Where,
P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
4. Substituting the equation in 3 into equation in 2 above, we have;
[tex] Power = \frac {mgh}{time} [/tex]
En que porcentaje varia la aceleracion de un cuerpo cuando su masa que reduce en un 50% y la fuerza resultante aplicada sobre el permanece constante
Answers
Answer:
La aceleración aumentaría en un 100%
Explanation:
Según la ley de Newton, la aceleración de un objeto es directamente proporcional a la fuerza aplicada al objeto. Está dado por:
Fuerza = masa * aceleración
Supongamos que la fuerza inicial es F, la aceleración inicial es a₁, mientras que la masa inicial es m. Por eso:
F = ma₁
a₁ = F / m
Si la masa se reduce en un 50% (0,5 m) y la fuerza se mantiene constante, la aceleración es:
a₂ = F / (0.5 m)
a₂ = 2 (F / m)
a₂ = 2a₁
La aceleración aumentaría en un 100%
A 5 kg cart moving at 2 m/s collides with a 10 kg cart that is at rest. What happens to the momentum of the 5 kg cart after the collision? *
Answers
Answer:
The velocity stays the same
Explanation:
Given data
Mass M1= 5kg
U1=2m/s
V1=???
Mass M2= 10kg
V2= 0m/s
U2=0m/s
We know that the law of conservation of linear momentum is expressed as
M1U1+M2U2= M1V1+M2V2
substitute
5*2+10*0=5*V1+10*0
10=5V1
V1= 10/5
V1= 2 m/s
The 5kg mass will bounce back with a velocity of 2m/s
Hence the velocity stays the same
To fight a bacterial infection, a patient was given an antibiotic to take for 10 days. After the patient finished taking the antibiotics as directed, almost all the bacteria were killed. After another 10 days, the patient was sick again with the same type of infection.
What most likely happened?
A A few bacteria survived the antibiotics and stopped reproducing.
B The patient’s high fever inactivated the antibiotic, allowing the surviving bacteria to grow rapidly.
C The antibiotic slowed the life cycle of the bacteria.
D Some of the bacteria were resistant to the antibiotic, and they
reproduced.
HELP!!
Answers
Answer:
its D
Explanation:
didnt see what u said lol they deleted it again :(
Earth is taken as zero electric potential, through it has net negative charge because of
a.its layer radius
b.its smaller radius
c.heavy mass
d.its large permittivity
Answers
Answer:
"Its larger radius"
Explanation:
The electric potential is given by :
[tex]V=\dfrac{kQ}{r}[/tex]
Where
k is the electrostatic constant
Q is electric charge
r is the radius
For Earth, the value of r is very large and Q is very smaller. Due to large r, the potential of Earth's surface is almost zero. Hence, the correct option is (a).
Could someone please help me..?
Protons:
A. are found in the nucleus and are "locked" in.
B. are found on energy levels and are "locked" in.
C. are found in the nucleus and are able to travel.
D. are found on energy levels and are able to travel.
Answers
Answer:
a
Explanation:
are found in the nucleus and are locked in
Answer:
A
Explanation:
Thats what I think the answer is because protons and neutrons bond together in the nucleus.
Could someone please help me..?
Electrons:
A. are found in the nucleus and are "locked" in.
B. are found on energy levels and are "locked" in.
C. are found in the nucleus and are able to travel.
D. are found on energy levels and are able to travel.
Answers
1. The energy an object has while it is moving is called kinetic energy, or the energy of
A)traction
B)friction
C)magnetism
D)motion
Answers
Answer:
D
Explanation:
I hope this helps :)
Let me know if you want a full explanation
The energy an object has while it is moving is called kinetic energy, or the energy of motion. Thus, the correct option for this question is D.
What do you mean by Kinetic energy?Kinetic energy may be defined as a type of energy that an object possesses due to its motion. It is defined as the work that is required in order to accelerate a body of a given mass from rest to its stated velocity. It is also known as the energy that is possessed by an object by the virtue of its motion.
Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.
Therefore, the energy an object has while it is moving is called kinetic energy, or the energy of motion. Thus, the correct option for this question is D.
To learn more about Kinetic energy, refer to the link:
https://brainly.com/question/25959744
#SPJ2
3 ways objects can be grouped are
Answers
Answer:
Transparent = lets light pass through without significant interference
Translucent = lets light pass through with significant interference
Opaque = Doesn't let light pass, instead absorbs it
At t = 3 seconds, what is the velocity of the object
Answers
Answer:
NO ANSWER
Explanation:
there is no tragectory or diagram given
WHICH OBJECT?
When a hot object makes a cold object warmer what is it called
Answers
does anybody have social media and could help me with my homework ? i will send you pictures of my work please all of my work is due tomorrow!! i need help
Answers
An alpha particle (the nucleus of a helium
atom), carrying a charge of 3.2 x 10-19 C
moves at 4.1 x 107 m/s at a right angle to a
magnetic field.
If the particle experiences a force of
2.3 x 10-14 N due to the magnetic field, what
is the magnitude of the magnetic field?
Answer in units of T.
Answers
Answer:
QuestionExplanation:
PLEASE HELP
Question: How do the number of beats relate to the frequencies of the two sound waves?
Answers
Answer:
The beat frequency is always equal to the difference in frequency of the two notes that interfere to produce the beats. So if two sound waves with frequencies of 256 Hz and 254 Hz are played simultaneously, a beat frequency of 2 Hz will be detected. ... These sounds will interfere to produce detectable beats.
Explanation:
pls help
What graph indicates no reference to direction of motion, and explain why.
Answers
Answer:
graph A
Explanation:
the slope of the distance-time graph is speed, speed is a scalar (with magnitudes but no direction)
but the slope for the velocity time graph is acceleration, acceleration is vector quantity ( has magnitude and direction)
A coin dropped in the lift it takes time 0.5 s to reach the floor when lift is staionary it takes time t when lift is moving up
Answers
Answer:
t₁ > t₂
Explanation:
A coin is dropped in a lift. It takes time t₁ to reach the floor when lift is stationary. It takes time t₂ when lift is moving up with constant acceleration. Then t₁ > t₂, t₁ = t₂, t₁ >> t₂ , t₂ > t₁
Solution:
Newton's law of motion is given by:
s = ut + (1/2)gt²;
where s is the the distance covered, u is initial velocity, g is the acceleration due to gravity and t is the time taken.
u = 0 m/s, t₁ is the time to reach ground when the light is stationary and t₂ is the time to reach ground when the lift is moving with a constant acceleration a.
hence:
When stationary:
[tex]s=\frac{1}{2}gt_1^2\\\\t_1^2=\frac{2s}{g} \\\\When\ moving\ with\ acceleration(a):\\\\s=\frac{1}{2}(g+a)t_2^2\\\\t_2^2=\frac{2s}{g+a}[/tex]
Hence t₂ < t₁, this means that t₁ > t₂.
Neptune and Uranus are called the "ice giants" due to the presence of ice on their surface. Which is a reasonable explanation for why there aren't any ice giants in the group of terrestrial planets? A. They have rocky surfaces. B. They do not have rings. C. They are too close to the sun.
Answers
Answer:
C. They are too close to the sun.
Explanation:
Due to their relative location the gas giant such as neptune and Uranus are mostly cold and icy planets as they are located deep into the solar system and have large distance firm the sun.As compared to those of the earth and other rocky planets. Due to their distance they consist of primitive atmosphere and have slow rotation and movement.ay wants to buy a new fireplace insert that will burn gas instead of wood. She normally uses two cords of wood in the winter. Wood costs $250/cord. She is interested in knowing how much she will save if she burns gas in the fireplace insert. Gas costs $0.91 per therm. One therm is 100,000 BTU. The fireplace insert burns 33,000 BTU per hour. Kay figures she will burn the fireplace 5 hours per day for 120 days. How much will she save in one winter if she burns gas instead of wood
Answers
Answer:
Saved Money = $ 319.82
Explanation:
First, we will calculate the cost of wood:
[tex]Wood\ Cost = (No.\ of\ Cords)(Unit\ Cost)\\Wood\ Cost = (2 cords)(\$ 250/cord)\\Wood\ Cost = \$ 500\\[/tex]
Now, we calculate the time to burn gas:
[tex]Time\ to\ burn\ gas = (5\ hours/day)(120\ days)\\Time\ to\ burn\ gas = 600\ hr\\[/tex]
Now, we calculate the energy:
[tex]Energy\ Required = (600\ hr)(33000\ BTU/hr)(\frac{1\ therm}{100000\ BTU})\\\\Energy\ Required = 198\ therm\\[/tex]
Now, we will calculate the cost of gas:
[tex]Gas\ Cost = (Energy\ Required)(Unit\ Cost)\\Gas\ Cost = (198\ therm)(\$\ 0.91/therm)\\Gas\ Cost = \$\ 180.18\\[/tex]
Now, we will calculate the amount of money saved:
[tex]Saved\ Money = Wood\ Cost - Gas\ Cost\\Saved\ Money = \$\ 500 - \$\ 180.18\\[/tex]
Saved Money = $ 319.82
Which of the following are vector quantities? Check all that apply.
A. Distance
B. Acceleration
C. Time
D. Velocity
Answers
jack tries to place magnets on the door of his refrigerator. he observes that the magnets don't stick. he guesses that the door of the refrigerator is made of a non magnetic substance. what stage of scienctific investigation does his guess represent
a. ask questions
b. construct a hypothesis
c. explain the results
d. make observation
Answers
Answer:D
Explanation:
Because u have to make observation then ask a question
Describe the method of obtaining pure drinking water from the sea water with a labelled diagram.
( plzzzz answer correctly )
Answers
Answer:
Desalination is a process that takes away mineral components from saline water.
Explanation:
u welcome
which of the following is NOT an example of a heating appliance?
A. steam engine
B. curling iron
C. coffemaker
D. clothes iron
