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Question1
Find out the coefficient of kinetic friction between a 3.15 kg block and horizontal surface on which it rests if an 82.0 N/m spring must be stretched by 5.90 cm to pull it with constant speed. Suppose that the spring pulls in the horizontal direction.
Question2
A girl on a sled coasts down a hill. Her speed is 7.8 m/s when she reaches level ground at the bottom. Coefficient of kinetic friction between the sled's runners and the hard, icy snow is 0.047, and the girl and sled together weigh 635 N. How far does sled travel on level ground before coming to rest?
Question3
A net torque of magnitude 500 Nm is exerted on the rotor of an electric generator for 29 s.
What is magnitude of the angular momentum of the rotor at the end of 29 s if it was initially at rest?
Answer in units of kgm2/s
In order better to map the surface features of the Moon, Calculate the satellite\'s kinetic energy, gravitational potential energy, and total orbital energy
If the bullet has a mass of 21.0 g and a speed of 235 m/s, explain how high will the block rise into the air after the bullet becomes embedded in it?
A wheel 90.0 cm in diameter accelerates uniformly from 235 rpm to 385 rpm in 6s. How far will a point on the edge of the wheel have travelled in this time.
A couple is defined as two parallel forces, separated by a distance, that have equal magnitudes but opposite directions. A couple only produces a rotation in a specified direction. The moment produced by a couple is known as a couple moment.
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.7 cubic meters of sea water
During the pitching motion, a baseball pitcher exerted an average horizontal force of 60 N against the 0.15 kg baseball while moving it through a horizontal displacement of 2.0 m before he released it
The pupil of an eagle's eye has a diameter of 6.0 mm. Two field mice are separated by 0.010 m. How much time passes until the eagle sees the mice as separate objects
When a particle is at the origin, it has a velocity given by vo = (12i + 15j)ms-1. How long does it take the particle to hit the y-axis
Two electrons are located at two of the vertices of an equilateral triangle, one at each vertex. What is the net electric field at the third vertex
A generator at a power plant produces a voltage of 9.00 kV and current 150 A. How much power is lost as waste heat in the transmission line
a 4.0x10^6 ohm resistor is connected in series with a 0.50 microfarad capacitor. What is the change in voltage between t=RC and t=3RC
Describe what the Zeroth Law of Thermodynamics is in your own words. Also, draw a scenario that verifies the Law is accurate. State the other Laws of Thermodynamics
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