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1. What is the difference between mass and weight? Does one of these matter more than the other when you are dieting, or are both important? Why?
2. What is frictional force? Name at least two examples from everyday life where friction is important, and explain why
3. Training astronauts for weightlessness is always a challenge for NASA to simulate or for theme park rides to achieve. Name at least one method which can be used to simulate weightlessness and describe in detail the forces involved and how they counteract the force of gravity.
A box of 350N weight is at rest at the bottom of the plank that is 6.0m long and rises 30 degree above the ground. what is the velocity of the box at the top of the plank
A stopped wire, 0.90 m long, resonates with a tone whose wavelength is 0.72 m. What is the frequency of this normal mode in SI units
The pendulum pictured above has a length of 15.0 cm when it is displaced to the right of the peg, Determine the period for this pendulum close to the surface of the Earth
A 45 centimeter diameter loop of wire is in a 0.525-T magnetic field oriented perpendicular to the plane of loop. determine what is the average induced emf
A 1200 turn coil in a dc motor has an area per turn of 2.2 * 10-2m-2. What is the current in the coil
Find out the frequency of the fourth harmonic if the string is fixed at one end and free at other. (That is, if the free end is attached to a long string of negligible mass.)
If you hold a horizontal metal bar several centimeters above the ground and move it through grass, each leaf of grass bends out of the way. How can it exert enough force on a leaf of grass to shear it off
The figure shows a zero-resistance rod sliding to the right on two zero-resistance rails separated by the distance L = 0.381 m. The rails are connected by a 13.1 ohm resistor, and the entire system is in a uniform magnetic field with a magnitude o..
A rocket is fired at an angle from the top of a tower of height h0 = 55.7m. What is the position vector of the rocket 15.0s after it is fired
A car traveling at a constant speed of 36.5 m/s passes a trooper hidden behind a billboard. How long does it take the trooper to overtake the speeding car
Suppose an object is placed at the edge of a recordplayer. The record player has a diameter 30.0cm and rotatesat 33.3 RPM (revolutions per minute). how fast is the outside edge of the record moving
What is the rms current in an 84.0-mH inductor when it is connected to a 60.0-Hz generator with an rms voltage of 114 V
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