Answer:
75Watts
Explanation:
Given parameters:
Time = 12s
Force applied = 20N
Height = 45m
Unknown:
Power output = ?
Solution:
Power is defined as the rate at which work is done.
It is mathematically expressed as;
Power = 
Work done = force x distance = 20 x 45 = 900J
Power = 
= 75Watts
A transverse wave is a moving wave in which the current is perpendicular to the direction of the wave or path of propagation. A longitudinal wave are waves in which the displacement of the median is in the direction of the propagation.
Example:
Transverse- pond ripple
Longitudinal- crest and troff
Answer:
a. xy
Explanation:
The Faraday's law of induction can be used to express the relationship between the electric field line integral and the magnetic flux rate change in a closed loop. In order to ensure that the relationship between the two variables is equivalent to zero, the integration should be conducted on the xy plane. The correct option is option a.
Kinetic energy is greatest when it passes through the center, lowest point. Potential energy is zero there.
Potential energy is greatest at the left and right ends, where it stops and heads back the other way. Kinetic energy is zero there.
So the pendulum is constantly converting its energy from one state to the other.
Pull it to the side and hold. Energy is all potential. Then let it go.
One complete swing ... to the other side and back to your hand ... does this:
Potential & let it go -> kinetic -> potential -> kinetic -> Potential & catch it.
<span>. . . . . . . . . . . . . . . . . . center . . . . . . . . . . . . center this is sombody elses but i moved here for you
still mark brainlest please if right
</span>
Answer:
The acceleration of the ball's center of mass = 2.94 m/s²
Explanation:
The speed of the ball at the base of the ramp, v = 2.63 m/s
Mass of the ball = 1.75 kg
Radius of the ball, R = 40 cm = 0.4 m
In this motion, potential energy due to the height of the ball is converted to linear angular kinetic energy
Based on the law of energy conservation
Potential energy = Linear KE + angular KE
KE = kinetic Energy
Linear KE = 0.5 mv²
Linear KE = 0.5 * 1.75 * 2.63²
Linear KE = 6.052 J
Angular KE = 0.5 Iω²
I = 2/ 3 MR² = 0.667 * 1.75 * 0.4²
I = 0.187 N.s
ω = V/R = 2.63/0.4
ω = 6.575 Rad/s
Angular KE = 0.5 * 0.187 * 6.575²
Angular KE = 4.04 J
PE = mgh = 1.75 * 9.8 * h = 17.15h
Using the law of energy conservation
17.15h = 6.052 + 4.04
h = 10.092/17.15
h = 0.589 m
Using the equation of motion
