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A tennis ball of mass 0.60 kg strikes a brick wall and bounces straight back along the incoming direction. The collision is neither completely elastic nor inelastic. The ball's incident speed is 40 m/s and the ball's return speed is 35 m/s. If the time over which the ball is in contact with the wall is 6 ms, what is the average force on the wall (in N) during the collision?
The x, y, and z components of a magnetic field are Bx = 0.12 T, By = 0.18 T, and Bz = 0.17 T. A 25 cm wire is oriented along the z axis and carries a current of 5.0 A. What is the magnitude of the magnetic force that acts on this wire?
A photoelectric-effect experiment finds a stopping potential of 1.93 V when light of 200 nm is used to illuminate the cathode, From what metal is the cathode made
The far point of a nearsighted person is 5.5 meter from her eyes, and she wears contacts that enable her to see distant objects clearly. Determine how high is the image formed by the contacts
About the axis of the rod.ωA ball of mass m is attached by two strings to a vertical rod. The entire system rotates at constant angular velocity.
You have 11 m of 1.9 mm diameter copper wire and a battery capable of passing 12 A through the wire. What magnetic field strength could you obtain inside a 2.0 cm diameter solenoid wound with the wire asclosely spaced as possible?
Two vectors, A and B are added by means of vector addition to give a resultant vector R: R=A+B. What are the maximum and minimum possible values for the magnitude of R
The output voltage of an ideal transformer connected to 240 V a.c mains is 24 volt. Now We have to calculate current in primary coil
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
A wave pulse travels along a string at a speed of 160 cm/s. Note that parts a - d are independent and refer to changes made to the original string. Find what will be the speed if the string tension is doubled
An ultrasonic linear transducer is used to perform B-mode imaging. The field of scan is 30 mm and the scan density is 4 lines/mm for the imaging. If the scanner works at a frame rate of 50 Hz, what is the maximum depth the imaging can observe? (Assum..
A 60 ohm and a 12 ohm resistor are connected in a series. Find the overall equivalent resistance of this combination
A solar panel measures 0.58 m by 1.1 m. In direct sunlight, the panel delivers 6.4 Amp at 6.1 Volt. compute the efficiency, as a percentage, of the solar panel in converting solar energy into electrical energy
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