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A 39.6-kg boy, riding a 2.33-kg skateboard at a velocity of +5.07 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 5.88 m/s, 10.17° above the horizontal. Ignore any friction between the skateboard and the sidewalk. What is the skateboard's velocity relative to the sidewalk at this instant? Be sure to include the correct algebraic sign with your answer.
Assuming that all radiation is emitted at the wavelength of peak intensity, for a skin temperature of 34 degrees C and a surface area of 1.6 m2, how many photons per second does the body emit
a transformer has N^1 =350 turns and N^2 =2000 turns. If the input voltage is 170V, what voltage is developed across the secondary coil?
A compressed-air cylinder stands 96.0 cm tall and has internal diameter 21.0cm cm . At room temperature, its pressure is 161 atm. How many moles of air are in the cylinder
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box, determine acceleration of the box
a man is standing near a gate and a flag pole. The gate is 15 ft from the pole. If the pole is h=35 ft tall, how far is the man from the gate
you are a fighter pilot in your jet. you are moving at 1000 km/h when you go into a climb in order to avoid a HUGE UFO. What is the radius of the circular arc
You took a job as a space station scientist. On a spacewalk you get separated from the station. At what speed will you move back toward the station
An 8.70-kg block slides with an initial speed of 1.51 m/s up a ramp inclined at an angle of 27.4 degrees with the horizontal. calculate the distance the block slides before coming to rest.
If you detect a frequency shift of 195.4Hz in the 4000-Hz bell of a bicycle as it approaches and then leaves you, how fast is the bicycle going
The pressure inside a gas bottle at 23.4 °C is 4350 kPa. What will be the pressure inside the bottle
If hot air is used instead of helium, what is the required volume of the balloon if the air inside can be maintained at 37.0 oC
At what distance along the central axis of a ring of radius R = 0.100 m and uniform charge is the magnitude of the electric field due to the ring's charge maximum
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