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If the gravitational field of earth were to increase, would fish float to the surface, sink or stay at the same depth?
Two charges are separated by some distance and the magnitude of the electric force between them is 224.6 Newtons. If the distance between the same two charges is tripled, what is the magnitude of the electric force on them now in Newtons?
Determine the magnitudes and directions of the currents in each resistor shown in Fig. 19-48. The batteries have emfs of 1 = 9.0 V and 2 = 13.0 V and the resistors have values of R1 = 15 , R2 = 20 , and R3 = 31 .
A rescue helicopter lifts a 85 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
What is the maximum speed of the mass and where does it occur? What is its speed at the 1/2 amplitude position of its motion?
when it is very far from the asteroid it will be traveling with speed 187 m/s. We have a large and powerful spring whose stiffness is 3.0 105 N/m. Explain how much must we compress the spring?
In the semiconductor industry, an insulating layer can be built onto silicon devices by oxidizing the silicon to form silica, SiO2, Write down a balanced equation for the reaction between silica and HF.
A rock is thrown from 50.0-m-high cliff with an initial velocity of 70 m/s at an angle of 53.0 degrees above the horizontal. Find the velocity vector for when it hits the ground below
If you put a 0.28 kg mass 15 cm from the axis of a massless disk, and you apply a 0.4 N force on a string wrapped at the disk's edge, what is the resulting angular acceleration
the pressure att he depth of 1.25 m in a tank of liquid is measured to be 125.5 kpa. the tank is open to the outside
q1. for an ideal atwood machine has a massless pulley of radius 10 cm which moves without friction and has masses of 2
A brass rod 25.0 cm long and 1 cm in diameter is welded end to end to a copper rod 25.0 cm long and 0.50 cm in diameter. What is the temperature at the brass / copper junction
Two identical masses are in a hemispherical bowl of radius R. One block is sitting at the bottom and the other is at the top. how high will each of them rise
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