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A baseball was hit at 45 m/s at an angle of 45o above the horizontal. Determine how long did it remain in the air? Determine how far did it travel horizontally?
The axle of a wheel is mounted on supports that rest ona rotating turn table as shown in the gure. The wheel has angular velocity !1 = 44:0 rad/s about its axle, and the turntable has angular velocity!2 = 35:0 rad/s about a vertical axis.
A 12.8 g bulletis fired horizontally into a 93 g woodenblock initially at rest on a horizontal surface. what was the speed of the bullet immediately before impact
A spring attached to the ceiling of an elevator is 10 cm long when nothing is hanging from it. It is 12 cm long when a certain mass is hanging from it and the elevator is at rest. How long will the spring be if the elevator moves downwards with a ..
Suppose that the voltage of the battery in the circuit is 3.3 V, the magnitude of the magnetic field (directed perpendicularly into the plane of the screen) is 0.66 T, and the length of the rod between the rails is 0.23 m. Assuming that the rails are..
During a 58-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 7.1-mA, What is the change in the primary current
an other frame moves with a speed of 0.95 relative to the home frame. an object at rest in the other frame has a length
The length of a spaceship is measured to be exactly 1/3 its restlength. (a) What is the speed parameter β ofthe spaceship relative to the observer's frame?(b) By what integer factor do the spaceship'sclocks run slow, compared to clocks in the observe..
Measurements on two stars indicate that Star X has a surface temperature of 6127°C and Star Y has a surface temperature of 12127°C. If both stars have the same radius, what is the ratio of the luminosity (total power output) of Star Y to the luminosi..
The depth of the potential well for free electrons in a metal can be accurately determined by observing that the photoelectricwork function is the energy necessary to remove an electron at thetop of the occupied states from the metal;
A candle is placed 16.85 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, Find the focal length of the convex mirror
A car entering a freeway ramp accelerates from 14 m/s to 25 m/s in 10 seconds. what is the cars average acceleration during this 10 seconds.
A ladder of negligible mass and length 5.00 m rests against a vertical wall. The ladder makes an angle of 53.1 with the ground. Find the forces of the ground and the wall on the ladder
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