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The drawing shows a device that can be used to measure the speed of a bullet. The device consists of two rotating discs, separated by a distance d = 0.85m and rotating with an angular speed of 95 rad/sec. The bullet first passes through the left disc and then through the right disc. It is found that the angular displacement between the two bullet holes is θ = 0.24 rad. From these data determine the speed of the bullet.
An electron is released from rest in a uniform electric field and accelerates to the north at a rate of 199m/s2. What is the magnitude of the electric field?
A compound microscope has objective and eyepiece focal lengths of 6.0mm and 1.7cm , respectively. If the lenses are 8.5 apart, what is the magnification of the instrument?
Assume that block C with mass mC is pushed to the left on a surface with a friction by a horizontally applied force Fapp and that the block is connected by a cord passing through a frictionless pulley to a hanging block D with mass mD
A fire in an enclosure has reached flashover, & the gas temperature is assumed to be uniform at 1000oC. The enclosure has an opening 3 m wide & 2 m high. Find the position of the neutral layer, measured from the bottom of the opening.
A 6.40 nF capacitor is initially charged by a potential difference of 1.40×103 V. find the final electric potential energy stored in the capacitor
the project consists of a word processed report. the topic for the project is heat loss in a cylindrical pipe although
Explain two methods to make grapheme and explain two methods to make quantum dots?
during a rockslide a 660 kg rock slides from rest down a hillside that is 720 m along the slope and 250 m high. the
A car is traveling 80 m/s from left to right when the brakes are applied. (The acceleration is constant.) After 15s, it comes to a stop. How far did it travel before it came to a stop
A 310 turn solenoid with a length of 22.0 cm and a radius of 1.40 cm carries a current of 2.30 A. Calculate the area of the 4-turn coil
Inside the tube is a uniformelectric field of 4.50*10-4 N/C pointing in negativey-direction. How far does the particle travel before hitting the tube wall.
A cannonball shot with the initial velocity of 129 m/s at an angle of 36° follows a parabolic path and hits a balloon at the top of its trajectory. Neglect air resistance, how fast is the cannonball going as it hits the balloon.
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