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A car is speeding up while traveling down a hill. The car starts from rest and t obtains a speed of 30.0 m/s in 6.00 s. While the car is accelerating it's noticed that the 0.1 -kg -dice hanging by a string from the ceiling remains perpendicular to the ceiling. Find (a) the angle theta and (b) the tension in die string.
A proton and an electron are each located at rest in a uniform electric field of magnitude 544 N/C. Estimate the speed of each particle 52.8 nanoseconds after being released
A red laser emits photons by a wavelength of 635 nm. If this laser has a power of 23 W, how many photons does it emit in 1 s? If the light emitted by the laser is absorbed with a black sail, what is the force on the sail?
A charge q at the origin is at the back corner of an imaginary cube of edge length a. What is the electric flux through the shaded region? Use direct integration
Derive expressions for the Lorentz transformation equation of acceleration in the x and y directions. Do this using the Lorentz velocity transformation
A rabbit runs in the straight line with a velocity of +1.6 m/s for a period of time, rests for 12 s, and then runs again along the equivalent line at +0.52 m/s for an unidentified amount of time. The rabbit travels the total distance of 1224 m, and i..
Traveling at a speed of 15.2 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. What is the speed of the automobile after 1.15s have elapsed
At some automobile toll-collecting stations, the thin metal wire sticks up from the road and makes contact with cars before they reach the toll collector. What is the reason of this wire.
Transformer 1 has a primary voltage and a secondary voltage . Transformer 2 has twice the number of turns on both its primary, If the primary voltage on transformer 2 is , what is its secondary voltage
Must show all work!!!! A Playground merry-go-rond has a radius of r=3.0m, calculate th angular velocity of the merry go round and child system when the child reaches the rim
To pump out a subway, a pump is used that can increase the absolute pressureon the pool of water at the bottom of yhe subway to 400 kpa. what is the flow velocity at street level
A helicopter is ascending vertically with a speed of 5.03m/s. How much time does it take for the package to reach the ground
A proton is released from rest at the left side of a region by a uniform electric field that is directed to the right. At the same time, an electron is released from rest on the right side of this same region. Ignoring the electrical and gravitationa..
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