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A glass rod rubbed with silk acquires a charge of +1.1×10?9 . Is the charge on the silk positive, zero, or negative? Is the charge on the silk positive, zero, or negative? positive zero negative Why? Essay answers are limited to about 500 words (3800 characters maximum, including spaces). What is the charge on the silk? Express your answer using two significant figures. How many electrons have been transferred to the silk? Express your answer using two significant figures. How much mass has the glass rod gained or lost? Express your answer using two significant figures.
A step-up transformer has 26 turns on the primary coil and 770 turns on the secondary coil. what input current and voltage are needed
A person weighs 75 N on the surface of the moon and 427 N on the surface of the Earth. What is the acceleration of gravity on the surface of the moon
An object with a mass of m = 4.6 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.265 m, determine the velocity when it hits the floor
In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80m/s^2. What is its initial velocity as it leaves the ground
A converging lens with a focal length of 12.4cm forms a virtual image 8.50mm tall, 17.6cm to the right of the lens. Determine the position of the object
A piece of unpainted wood barely floats in a container partly filled with water. If container is sealed and then pressurized above atmospheric pressure, does the wood rise, sink, or remain at the similar level.
An early method of measuring the speed of light makes use of a rotating slotted wheel. A beam of light passes through one of the slots at the outside edge of the wheel, find the linear speed of a point on the edge of the wheel
In a hydraulic lift, the maximum gauge pressure is 18.5 atm. If the diameter of the output line is 18.7 cm, what is the heaviest vehicle that can be lifted
A 2.0 cm x 2.0 cm parallel-plate capacitor has a 3.0 mm spacing.The electric field strength inside the capacitor is 1.1 x105 V/m. How much charge is on each plate
A large tank is filled with methane gas at a concentration of 0.585 kg/m3 The valve of a 1.38-m pipe connecting the tank to the atmosphere is inadvertently left open for fourteen hours. What is the cross-sectional area of the pipe
the earth takes slightly less than one day to complete one rotation about the axis passing through its poles. what is the angular speed of the earth about its axis
The angle is 40 degrees and the length is 7.50 m, If the seat weighs 205 N and a 866-N person is sitting in it, find the tension in the inclined cable
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