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A child goes down a water slide and splashes into the water. At the top, the child has a speed of 4 m/s. The top of the slide is 2.40 m above the surface of the water. If there were no friction, how fast would the child be moving when she hits the water?
The wavelength of red helium-neon laser light is 632.8 nm. What is the wavelength of the laser light in the class that has an index of refraction of 1.5 in units of nm, What is the speed of the laser light in the glass in units of 10^8 m/s
A 0.290-kg block along a horizontal track has a speed of 1.60 m/s, What is the spring's maximum compression if the track is frictionless
A positive charge +q1 is located to the left of a negative charge -q2. ON a line passing through the two charges, there are two places where the potential is zero. The first place is 4.00 cm to the left of the negative charge.
Throughout liftoff, a hot-air balloon accelerates upward at a rate of 3m/s^2. The balloonist drops an object over the side of the gondola when the speed is 13m/s.
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, What is the total charge of the protons that must be fired at the tumor to deposit the required energy
A 0.329-kg volleyball approaches a player horizontally with a speed of 12.9 m/s. What impulse is delivered to the ball by the player
The Ed-Scale defines the perfect temperature of a martini to be 14 degrees E and the boiling point of antifreeze to be 100 degrees E. Use this equation to find the freezing point of water in Eds
Each plate of a parallel-plate capacitor is a square of side 3.89 cm and the plates are separated by 0.539 mm. Find the electric field strength inside the capacitor
A student uses an audio oscillator of adjustable frequency to measure the depth of a water well. how many antinodes are in the standing wave
A parallel plate capacitor has 2.5cm^2 plates that are separated by 2mm in a vacuum. calculate its capacitance and charge on each plate
A 10-m-by-14-m house is built on a 12-cm-thick slab of concrete. What is the rate of heat loss through the slab
A 15g bullut is stopped in a block of wood ( mw=5.8 kg). What was the origional speed of the bullet
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