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A super nova releases 1.0×1045 J of energy.It is 1670 ly from earth. If you were facing the star in question,and your face was a circle 7 cm in radius, how much energy would reach your face?
The electric field 2.0 cm from a small object points away from the object with a strength of 270,000 nC. What is the objects charge
What is the maximum displacement of the bridge deck?
Starting from rest, a 92-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 840 N, How far did he slide down the pole
A block of mass A=.75kg moves with a constant speed v0=5.2 m/s and approaches another block which is at rest and attached to an ideal spring with the force constant k=2.5 N/m. Determine the amplitude of oscillations of the 2 blocks
q1. over a 30-day period a power plant generates an average of 751 mw of electrical power and 1225 mw of waste heat and
A guitar string produces 4 beats per second when sounded with a 350-Hz tuning fork and 9 beats per second when sounded with a 355-Hz tuning fork. What is the vibrational frequency of the string
A rock is suspended from a scale reads 20.0 N. A beaker of water is raised up so the rock is totally submerged in the water. What is the density of the rock
question1if argentinosaurus a long-necked gigantic sauropod had a head height of 19 m and a heart height of 7.9 m what
Determine the normal force exerted by the road on the car, the normal force exerted by the car on the 73-kg driver, and the car speed at which the normal force on driver equals zero.
Differentiate between the following three types of plain carbon steels.
What velocity must be transferred to the spacecraft to crash it into the sun? Assume it is initially in a solar circular orbit, at the same distance from the sun as the Earth. What velocity must be transferred to the spacecraft so that it will escape..
The surface between a 12kg block , the 16kg wedge and between 16 kg wedge and the horizontal plane are smoothe, What is the force F which must be exerted on the 16 kg block in order that the 12 kg block
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