Answer:
11.8 Joules
Explanation:
Given:-
- The height of the target ball, si = 0.860 m
- The mass of target and steel ball, m = 0.012 kg
- The target ball travels a distance ( x ) after being struck = 1.40 m
Find:-
What is the kinetic energy (in joules) of the target ball just after it is struck?
Solution:-
- We are given the initial distance of the target ball as 0.86 m above the floor which travels a distance ( x ) after being struck.
- We will employ the one dimensional kinematic equation of motion to determine the initial velocity ( vi ) of the target ball as follows:
Where,
vf: The final velocity of target ball at maximum height = 0
g: The gravitational acceleration constant = 9.8 m/s^2
- Plug in the required parameters and evaluate the ( vi ) as follows:
- The kinetic energy ( Ek ) of an object with mass ( m ) and initial velocity ( vi ) is expressed as:
Answer: The kinetic energy of the target ball just after it is struck is 11.8 Joules.
Answer:
69 revolutions
Explanation:
given,
initial angular velocity = 0
final angular velocity = 6 rev/s
when safety switch turned off
tub smoothly slows to rest in (t)= 13 s
total revolution of tub = ?
angular acceleration =
angular acceleration =
= 0.6 rev/s²
now,
= 30 revolution
now,
when safety switch turn off
angular acceleration =
angular acceleration =
= -0.462 rev/s²
now,
= 39 revolution
total revolution = 30 + 39 = 69 revolutions.
tub will rotate 69 revolutions
Answer:
6amp
Explanation:
From Ohm's Law
V = IR
Where V = 12volts, R = 2ohms
12volts = I × 2ohms
I = 12/2
I = 6amp
The current flowing through the light bulb is 6amp
The Maximum Kinetic energy of a proton is -
E(max) = 0.063 x joules.
We have a Cyclotron designed to accelerate protons.
We have to determine the Maximum Kinetic energy of Protons.
<h3>What is a Cyclotron? On what principle it works?</h3>
Cyclotron is a device used to accelerate charged particles to high energies. It works on the principle that a charged particle moving normal to a magnetic field experiences magnetic Lorentz force due to which the particle moves in a circular path. The magnetic Lorentz force is given by-
F = qvB sinθ
According to the question -
In a cyclotron the force by a magnetic field is equal to the centrifugal force.
Now, for r(max) - ( Since v = rω)
q v(max) B sin (90) =
Now -
r(max) = 0.35 m
B = 0.8 Tesla
Therefore -
v(max) =
v(max) = 0.28 x m/sec
Therefore, the Maximum kinetic energy =
E(max) =
E(max) =
E(max) = 0.063 x joules
Hence, the Maximum Kinetic energy of a proton is -
E(max) = 0.063 x joules.
To solve more questions on Cyclotron, visit the link below-
brainly.com/question/14555284
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This statement is true. The greater the mass is in an object, it is indeed the higher resistance to a change in movement the object will have. That only mean that the mass of an object and its resistance to change of movement is directly proportional.