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1. A small electric device has a resistance of 15 ohms when the current in it is 0.5 amperes. Calculate the voltage required to produce this current.
2. Calculate the velocity of a car (in m/s) that starts from rest and accelerates at 1 m/s2 for 6 seconds.
3. Calculate the centripetal acceleration of a 2 kg mass (in m/s2) if it is attached to a 0.5 m rope and revolves at a speed of 16 m/s?
4. The mass of a train is 27,666 kg. If the train accelerates at 1.1 m/s2, what net force (in Newtons) acts on the train?
5. The kinetic energy of a motorcycle and driver is 57,068 J. If their total mass is 500 kg, what is their velocity (in m/s)?
6. Calculate the momentum of a 265 kg motorcycle traveling at 65 m/s.
a 3-kg object moving to the right on a frictionless horizontal surface with a speed of 2 ms collides head-on and sticks
a ball is thrown vertically upward with a speed of 15.0 ms. a how high does it rise? b how long does it take to reach
An unknown material has a normal melting/freezing point of -26.3° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°). find the latent heat of fusion of the unknown material
A fully charged capacitor with a voltage of 120 V is discharged through a resistor. What is the voltage across the capacitor at the end of five time constants
A capacitor with initial charge q0 is discharged through a resistor. Determine how long is required for the capacitor to lose the first two-thirds of its charge
Find the ground state energy of an electron confined to a 1 D box of length 0.1 nm. Show an energy level diagram showing the first 5 levels. Calculate the wavelengths of the photons corresponding to transitions between the third level and the ground ..
A machinist with normal vision has a near point at 25 centimeter. With these eyeglasses, find the near point of the machinist
Suppose the speeder is traveling with a constant speed of 25m/s , and that the maximum acceleration of the police car is 3.1m/s2. find the maximum head-start distance the speeder can have
Tarzan, King of the Jungle (mass = 70.4 kg), grabs a vine hanging from a tree branch. He is 4.80m off the ground when he grabs the vine. How high will Tarzan and Jane swing
As part of a physics experiment, you stand on a bathroom scale in an elevator. Find the magnitude of the elevator acceleration
A mass attached to a spring is lifted 10cm and then let go at which point the mass bobs up and down completing 4 oscillations in 10 sec. When does the mass first reach its maximum speed and what is that speed?
A microscope with a tube length of 200mm achieves a total magnification of 800× with a 40× objective and a 20× eyepiece. How far is the sample from the objective lens
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