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A 1750-kg car is traveling with a speed of15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 55.5 m?
A satellite has a mass of 5555 kg and is in a circular orbit 4.20 105 m above the surface of a planet. What would be the true weight of the satellite if it were at rest on the planet's surface
For about 10 years after the French revolution, the French government attempted to base measures of time on multiples of ten: One week consisted of 10 days, find the ratio of the French decimal week to the standard week
Three, and only three, bright fringes can be seen on either side of the central maximum when a grating is illuminated with light ( = 430 nm)
A wave on a string has a speed of 331 m/s. If the tension in the string is 143 N and its length is 1.8 m, what is the mass of the string
A uniform 1.7-kg rod that is 0.93 m long is suspended at rest from the ceiling by two springs, one at each end. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are..
The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.What is the block's speed when it is at a height of 0.25 m above the base of the slide? Explain how far is the spring compressed?
A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 1.8 meters long and 0.9 meters high. How far along the rough patch do the blocks go before stopping
A typical nuclear reactor generates 1000MW (1000MJ/s) of electrical energy. How many liters of cooling water have to be pumped through the reactor each minute
An air traffic controller has two aircraft on radar. The first is at an altitude of 0.5 km, a horizontal distance of 3 km measured along the ground to the point directly underneath the plane, and a bearing of 115° west of north.
An air-filled ion chamber is operated at a pressure of 3 atm, find the saturated ion current corresponding to a gamma-ray exposure of 1 mR/h
The peak value of the ac current in a circuit is 6.0 A, and peak value of the ac voltage applied to the circuit is 4.7 V. What is the average power delivered to the circuit?
q1. two ocean liners each with a mass of 40000 metric tons are moving on parallel courses 92 m apart. what is the
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