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A squirrel with an armful of nuts is sliding helplessly across an icy flat roof getting dangerously Close to the ledge. He understands Newton's third law and is able to save himself. Explain how he does it?
A long current-carrying wire is parallel to the y axis with the current I = 4.3 A along the +y direction. A magnetic field of magnitude B = 1.1 T lies in the y—z plane, directed 35° away from the y axis as shown in the figure below
If a helium nucleus with a mass of 6.68x10^-27kg, a charge of +2e, and an initial velocity of 1.50x10^7 m/s is projected head-on toward a gold nucleus with a charge of +79e, how close will the helium atom come to the gold nucleus before it stops a..
a 25kg mass hangs by a rope. If the tension in the rope is a constant 200N and the initial velocity of the mass is 3m/s upwards, what is the velocity of the mass after 2 seconds
An aluminum cylinder weighs 1.00 N. When this same cylinder is completely submerged in alcohol, the volume of the displaced alcohol is 3.85 10-5 m3. What is the specific gravity of the alcohol
a ball is thrown straight up in the air with a velocity of 40 ms. what is the speed of the ball right before it hits
a toy cannon uses a spring to project a 5.39-g soft rubber ball. the spring is originally compressed by 4.93 cm and has
It costs 2.6 cents to charge a car battery at a voltage of 12 {\rm V} and a current of 15 {\rm A} for 120 minutes. What is the cost of electrical energy per kilowatt-hour at this location
A juggler performs in a room whose ceiling is 3.0 m above thelevel of his hands. He throws a ball upward so that it just reachesthe ceiling. What is the time required for the ball to reach the ceiling
A typical adult human lung is about 2.05 liters and is made up of large numbers of small spherical cavities called alveoli. how many avioli are there in the lung
Describe the three main layers of the Sun's interior and what do astronomers mean by a "model of the Sun" - Briefly describe how you would determine the absolute magnitude of a nearby star.
When a light bulb is connected across the terminals of abattery, the battery delivers 24W of power to the bulb. What is emf of battery
The plates of a parallel-plate capacitor are 2.00mm apart, and each carries a charge of magnitude 85.0nC. The plates are in vacuum. The electric field among the plates has a magnitude of 5.00×106V/m
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