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Q. What must the charge (sign and magnitude) of a particle of mass 1.44 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 660 N/C?
Use 9.81 m/s^2 for the magnitude of the acceleration due to gravity.
Q. A uniform bar 10 feet long and weighing 5.0 lb. is supported by a fulcrum 3.0 feet from the left end. If a 12-lb load is hung from the left end, what downward pull at the right end is necessary to hold the bar in equilibrium? with what force does the fulcrum push up against the bar?
A vector {vec A} has a magnitude of 40.0 {rm m} and points in a direction 20.0 ^circ below the positive x axis. A second vector, {vec B}, has the magnitude of 75.0 {rm m} and points in a direction 50.0 ^circ above the positive x axis.
A hawk is flying horizontally at 17.0m/s in a straight line, 160 m above the ground. A mouse it has been carrying struggles free from its grasp. The hawk continues on its path at the same speed for 2.00s before attempting to retrieve its prey.
What are the total displacement and angle of displacement
A fully loaded station wagon has a mass of 1690 kg. If each of its four tires is inflated to a gauge pressure of 211 kPa, what is the total tire area in contact with road.
Two point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic si..
Decide the speed with the rock is thrown
Four or five gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. Use the following specific heat capacity data to resolve which block will increase its temperature the most.
A 180kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.130m/s. How much work must be completed on the hoop to stop it.
The level of the liquid surface in the tank can be calculated. If the pressure on the gage is 20 kPa, Determine the depth d of liquid in the tank?
What will transform in terms of the observable properties of the black hole as this process continues
You're driving down the highway late one night at 18 when a deer steps onto the road 36 in front of you. The reaction time before stepping on the brakes is 0.50, and the maximum deceleration of your car is 12.
How much farther from the tower does the cannonball from the higher cannon land than cannonball from the lower cannon.
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