<h3>
Answer:</h3>
539.56 Joules
<h3>
Explanation:</h3>
- Efficiency of a machine is the ratio of work output to work input expressed as a percentage.
- Efficiency = (work output/work input) × 100%
- Efficiency of a machine is not 100% because so energy is lost due to friction of the moving parts and also as heat.
In this case;
Efficiency = 94%
Work input = 574 Joules
Therefore, Assuming work output is x
94% = (x/574 J) × 100%
0.94 = (x/574 J)
<h3>x = 539.56 J</h3>
Thus, you get work of 539.56 J from the machine
Answer:
88.3
Explanation:
Emf in a rotating coil is given by rate of change of flux:
E= dФ/dt=(NABcos∅)/ dt
N: number of turns in the coil= 80
A: area of the coil= 0.25×0.40= 0.1
B: magnetic field strength= 1.1
Ф: angle of rotation= 90- 37= 53
dt= 0.06s
E= (80 × 0.4× 0.25×1.10 × cos53)/0.06= 88.3V
I think it’s dust sorry if it wrong
Answer:
<em></em>
<em>The lead shot-filled can experiences a greater force due to gravity because it contains more mass.</em>
Explanation:
The gravitational attractive force that acts on two different bodies on Earth depends on the body's masses. The greater the mass, the stronger the force of gravity acts on the body. The smaller the mass, the weaker the force of gravity acts on the body.
The can with the lead shot in it has a greater mass than that of the can that is filled with feathers. Therefore,<em> the can with the lead shot will experience a greater force due to gravitational attraction of the Earth</em> than that of the can that is filled with feathers.
