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Consider 2 similar situations. First, a snow sled is initially traveling with a velocity along horizontal snow and comes to a stop through friction. A second snow sled is traveling the same initial velocity on identical snow conditions and comes to a stop as well. However, the second is traveling down hill. The second takes a longer distance to slow down to a stop. Explain why
You warm 1.75kg of water at a constant volume from 16.0C to 30.5C in a kettle. For the same amount of heat, how many kilograms of 16.0C air would you be able to warm to 30.5C? Make the simplifying assumption that air is 100% N2. What volume would thi..
We wish to coat a piece of glass (n=1.56) with a thin film (n=1.42) so that a maximum amount of light will be transmitted (no reflection). What is the minimum thickness of the film in nanometers
A rechargeable battery that is completely drained of electrical energy can be completely charged by applying 6.0 mA of current for 1.0 h. how much energy is the battery capable of storing
The scalar product cannot have units. If the scalar product of two nonzero vectors is zero, then they are parallel. If the scalar product of two nonzero vectors is equal to the product of their magnitudes, then the two vectors are parallel.
A spherical drop of water carrying a charge of 35 pC has a potential of 540 V at its surface (with V = 0 atinfinity). What is the radius of the drop?
question1a rocket is fired at a speed of 87.0 ms from ground level at an angle of 50.0 deg above the horizontal. the
If a spaceship is approaching the earth at 0.18c and a message capsule is sent toward it at 0.46c relative to the earth, what is the speed of the capsule relative to the ship
A 8.41 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.496. what is the magnitude of the external force acting on the crate
Suppose a patient having an MRI is immersed in a 3.0 T field along the axis of his body. He then quickly tips his head to the side, toward his right shoulder, tipping his head by 30 degrees in the rather short time of 0.15 s.
The ear canal can be viewed as a tube about 2cm long with the eardrum acting as a closed end. What is the resonance frequency of that tube
A spring with a force constant of 130 is attached to the backpack and pulled horizontally, as indicated in the figure .If the backpack begins to slide when the spring ( = 130 ) stretches by 2.40, illustrate what is the coefficient of static fric..
If the angular magnification of an astronomical telescope is 38 and the diameter of the objective is 66 mm, what is the minimum diameter of the eyepiece
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