Answers
Related Questions
The total mechanical energy of a system is 950 J and the gravitational potential energy is 350 J. What is the kinetic energy?
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Answer:
The kinetic energy is 600 J
Explanation:
Mechanical Energy
The principle of the conservation of mechanical energy states that the total mechanical energy in a system remains constant as long as the only forces acting are conservative forces.
The mechanical energy is defined as the sum of the potential plus kinetic energies:
E = U + K
Where E is the total mechanical energy, U is the gravitational potential energy and K is the kinetic energy.
Solving for K:
K = E - U
The system described has a total mechanical energy of E=950 J and gravitational potential energy of U=350 J, thus:
K = 950 J - 350 J
K = 600 J
The kinetic energy is 600 J
5.
Assertion (A): Both stretched spring and compressed spring have potential energy
Reason (R): Work is done against the restoring force in each case.
a) Both A and R are true and R is the correct explanation of A
b) Both A and R true and R is not the correct explanation of A
c) A is true but Ris false
d) A is false but R is true
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Answer:
A. Both A and R are true and R is the correct explanation of A
starting from rest, a car accelerates to 45 m/s in 1 minute. what is the average acceleration of the car in m/s^2 ?
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Answer:
given us,
initial velocity (u)= 45m/s
time(t)= 1 min
final velocity (v)=?
here,
average acceleration = v-u/t
= v- 45/1
v= 45/1
:. v=45m/s
:. the average acceleration of the car in m/s^2 is 45m/s
Explanation:
we can use acceleration formula
Liam wants to determine if foam is a good insulator. He decides to connect wires to two ends of a battery and then connect one wire to each end of a foam cup. Which inquiry skill is Liam using?
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Answer: liain is using lucid mode
Explanation:btw im from canida so sorry if its wrong
You are a medical student who has been instructed to make a transverse Cut through the abdomen.Calling through the abdomen in which direction will accomplish your goal
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if the net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. what is the mass of the encyclopedia
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Answer:
3 kg
Explanation:
F = ma
(15) = m(5)
m = 3 kg
If object A has more mass than object B, what will object A need to accelerate at the same rate as object B?
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Answer:
More force
Explanation:
Object A has more mass than object B
For object A to accelerate at the same rate as object B, it will need more force.
According to Newton's second law of motion "the net force on a body is the product of its mass and acceleration".
Net force = mass x acceleration
Now, if a body has more mass and needs to accelerate at the same rate as another one with a lower mass, the force on it must be increased.
how can we calculate acceleration in motion which is not uniform or uniformly accelerated please help tell me another formula to calculate acceleration
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Answer:
These are some of the ones I found or know of.
Explanation:
F=ma
A= v-u/t
A= v^2/r
A skier rides horizontally off of a 200 meter high cliff. If he lands 25 meters away from the base of the cliff, how fast was he skiing as he went off the edge?
A. 0.91 m/s
B. 2.91 m/s
C. 3.91 m/s
D. 25.91 m/s
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Answer:
the answers, the correct one is C, v₀ₓ = vₓ = 3.91 m / s
Explanation:
This is a projectile launching exercise, in this case they indicate that when leaving the cliff it goes horizontally, therefore the initial vertical speed is zero, let's find the time to reach the base
y = y₀ + [tex]v_{oy}[/tex] t - ½ g t²
at the base the height is zero (y = 0 m)
0 = y₀ + 0 - ½ g t²
t = √ (2y₀ / g)
we calculate
t = √ (2 200 / 9.8)
t = 6.389 s
with this time we calculate the horizontal speed
v₀ₓ = x / t
v₀ₓx = 25 / 6,389
v₀ₓ = vₓ = 3.91 m / s
When checking the answers, the correct one is C
A cow standing atop a building in Times Square recalled a funny joke and began to laugh. The uncontrollable laughter caused the cow to fall over the side of the building. He fell for a time period of 3.5 s and landed in a bed of bushes. How fast was the cow moo-ving when he reached the bushes?
Which equation should be used to solve the problem?
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Answer:
Vf = 34.3 m/s
1st equation of motion was used to solve.
Explanation:
In order to find the final speed of the cow, when it hits the bushes, we can use first equation of motion:
Vf = Vi + gt
where,
Vf = Final Velocity of Cow = ?
Vi = Initial Velocity of Cow = 0 m/s
g = acceleration due to gravity = 9.8 m/s²
t = time taken = 3.5 s
Therefore,
Vf = 0 m/s + (9.8 m/s²)(3.5 s)
Vf = 34.3 m/s
1st equation of motion was used to solve.
Name 2 fundamental units of SI system except that of MKS system.
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The others are:
Ampere
Mol
Candela
Answer:
Ampare mole candelahope it is helpful to you
help me pleaseeeee
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Answer:
Explanation:
Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion...............
Motion and force of physics. Plz answer.
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Explanation:
a. " for every action there is an equal and opposite reaction".
b. The electric fan does not stop moving just after the switch turns off because of rational inertia force.
c. The force applied to first vehicle is 120N.
d. In my view it doesn't support the law of conservation of momentum. Momentum of 1 and 2 object before the collision is equal to the total momentum of two object after collision.
If the white car experiences a change in momentum equal to 105,000 kg*m/s and is in contact with the red car for 5 seconds before coming to rest, how much force, in Newtons, does the white car experience during the collision?
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Answer:
21000 N
Explanation:
From the question given above, the following data were obtained:
Change in momentum = 105000 kg.m/s
Time = 5s
Force =?
Force is related to momentum and time according to the following formula:
Force = Change in momentum / time
With the above formula, we can calculate the force the white car experience during the collision. This can be obtained as illustrated below:
Change in momentum = 105000 kg.m/s
Time = 5s
Force =?
Force = Change in momentum / time
Force = 105000 / 5
Force = 21000 N
Thus, the white car experience a force of 21000 N during the collision.
Galileo Galilei was the first scientist to perform experiments in order to test his ideas. He was also the first astronomer to systematically observe the skies with a telescope. Galileo made four key observations that challenged the widely accepted philosophical beliefs on which the geocentric model was based, thus providing support for the heliocentric model. From the following list of observations, which are the key observations made by Galileo that challenged widespread philosophical beliefs about the solar system?
a) Jupiter has orbiting moons.
b) The Sun has sunspots and rotates on its axis.
c) The Moon has mountains, valleys, and craters.
d) Venus goes through a full set of phases.
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Answer:
A) jupiter has orbiting moons
Explanation:
Btw I'm not sure abt it
1. The unit of power is called a derived unit, why?
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Answer:
Because its depends upon fundamental units and formed by combination of two or more fundamental units.
Can two spheres of different diameters and different
masses have the same moment of inertia?
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Answer:
NO
Explanation:
I=mr^2 this means moment inertia depends upon mass and square of radius or distance.
The UFP and LFP of a faulty Thermometer are 110 deg. C and -5 deg. C respectively. If this thermometer is used to measure the temperature of the liquid whose actual temperature is 50 deg. C, reading on the thermometer will be:
62.5 deg. C
57.5 deg. C
52.5 deg. C
42.5 deg. C
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Balanced Forces acting on an object will not change the object's motion. Unbalanced Forces acting on an object will change the change the object's motion.
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Answer:
TRUE
Explanation:
The answer is true.
Balance forces acting on a body will not change the motion of the body because the body experiences no net resultant force in one direction. When any body experiences equal forces with opposite directions, the net force or the resultant force experience by the body is zero.
In case of an unbalanced forces, there is a net force acting in one direction and so it causes the body to change in its state of motion in the direction of the net force.
What is the astronomical unit used to measure distances in the solar system?
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Answer:
Astronomical unit
Explanation:
Short Answer: It's (au)
Long Answer:
The astronomical unit (au or AU) is defined as exactly 149,597,870,700 meters (about 93 million mi), which is roughly equal to the average distance between the Sun and Earth.
if a gas produced, most likely a ______ reaction took place
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Answer:
if a gas produced, most likely a chemical reaction took place
Explanation:
Answer:
if a gas produced, most likely a Chemical reaction took place
Explanation:
hope this helps and have a good day <3
When a bug hits a windshield of a car, the force of the car on the bug equals the force of the bug on the car.
O True
O False
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True. The force of the car on the bug will be equal to the force of the bug on the car.
Newton's third lawThis statement is true according to Newton's third law of motion.
According to Newton's Third Law of Motion, for every action, there is an equal and opposite reaction.
In this case, the action is the force of the car on the bug, and the reaction is the force of the bug on the car.
Therefore, the force of the car on the bug is equal in magnitude and opposite in direction to the force of the bug on the car.
More on Newton's law can be found here: https://brainly.com/question/15280051
#SPJ1
why black coats are preferable in winter than others
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Answer:
the color black draws in heat as lighter colors reflect heat
Explanation:
Any one please give me the correct answer of this question???
I hope you can help me...
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Answer:
no one ever amswers my questions
Which illustration represents low accuracy but high precision?
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Answer:
D i think
Explanation:
Explain why people have different skin colors?
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I think it because of UV rays ultra violet ray which can make their colors different
Susie Small finds she weighs 300 N.
Calculate her mass.
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Answer:
30Kg
Explanation:
Weight = mass x gravitational field strength
300 = mass x 10
mass = 30kg
gravitational field strength is 9.8 on earth but normally we take it to be 10 for easy reference and calculations
The mass will be "30 kg". A further solution is provided below.
According to the question,
Weight,
300 NWe know that,
Gravitational field strength,
10The mass will be:
→ [tex]Weight = Mass\times Gravitational \ field \ strength[/tex]
or,
→ [tex]Mass = \frac{Weight}{Gravitational \ field \ strength}[/tex]
By putting the values, we get
→ [tex]= \frac{300}{10}[/tex]
→ [tex]= 30 \ kg[/tex]
Thus the above solution is right.
Learn more about mass here:
https://brainly.com/question/20353971
1. Explain how this picture is an example of kinetic energy.
2. What factors affect the energy of the ball?
3. What change could be made to give the ball more energy?
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Answer:
1. when in motion(moving) it is Kinetic energy
2. it is kinetic when moving and potential when at rest
3. by constantly kicking or moving the ball
Explanation:
5. A helicopter scoops a load of water out of a lake, to dump on a forest fire. The helicopter exerts 6480
N of force on the water while rising high enough to fly over a mountain. If the helicopter does 1.62 x
10%) of work on the water while lifting it, how high does it lift the water.
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Answer:
h = 250 m
Explanation:
Given that,
The helicopter exerts 6480 N of force on the water while rising high enough to fly over a mountain.
The helicopter does [tex]1.62\times 10^6\ J[/tex] of work on the water lifting it.
We need to find how high does it lift the water. Work done is given by :
[tex]W=Fh\\\\h=\dfrac{W}{F}\\\\h=\dfrac{1.62\times 10^6}{6480}\\\\h=250\ m[/tex]
So, it can lift the water to a height of 250 m.
how much force must be applied to accelerate a 3 kg remote control car from rest to 10 m/s in 5 seconds
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F =ma = 3 x 2 = 6 N