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A hockey puck leaves a player's stick with a speed of 8.20m/s and slides 30.0m before coming to rest.
Discover the coefficient of friction between the ice and the puck.
Two forces act on an object. One has a magnitude of152 newtons and points at an angle of68.0° above the +x axis. What are the magnitude and direction of this third force
A ball is thrown from the top of a building upward at an angle of 39degrees to the horizontal and with an initial speed of 24m/s. The ball is thrown at a height of 57 m above the ground and hits the ground 98.55 m from the base of the building. Wh..
Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 5.0). What must be the potential difference across the plates of the capacitor filled with a dielectric
A spacecraft moving away from Earth emits a 4327 Hz signal. A scientist on Earth measures thesignal to be 4323 Hz. What is the speed of the spacecraft relative to Earth
Two closely spaced circular disks form a parallel-plate capacitor. What are the diameters of the disks
A single lens is used to cast an image on a screen that is 60 centimeter from the lens. The image is three times the size of the object. Construct a ray trace to verify your calculations
Block A with mass 4 kg travels with speed vi=3 m/s on a smooth horizontal surface and collides with a stationary block B whose mass is 4 kg. How much kinetic energy was lost in the collision
Study of the fragment
A curve of radius 30.0 m is banked so that a car traveling 40.0km/h can round it even if the road is so icy that the coefficient of static friction is approximately zero. Find the speed at which a car can travel around this curve withoutskidding o..
the magnetic field 7.5 cm directly above the center of a 25 turn coil of radius 15cm is 0.80 mT. Find the current in the coil
A portable electric heater uses 22 A of current. The manufacturer recommends that an extension cord attached to the heater, What is the smallest radius of copper wire that can be used in the extension cord
Two trains on separate tracks move toward one another. Train 1 has a speed of 100 km/h, train 2 a speed of 60.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1? (Suppose the speed o..
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