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An elevator is moving upward at a constant speed of 4m/s. A man standing 10m above the top of the elevator throws a ball upward with a speed of 3m/s. Determine (a) when the ball will hit the elevator, (b) where the ball will hit the elevator with respect to the location of the man.
A potential difference V is applied to a wire of cross section A, length L, and resistivity ?. You want to change the applied potential difference, What should be the new values of L and A in terms of the old values
A projectile is shot from the edge of a cliff 140 m above ground level with an initial speed of 100 m/s at an angle of 37 degrees with the horizontal. Find out the time taken by the projectile to hit point at ground level.
John's face is 20 cm in front of a concave shaving mirror of focal length 30 cm. How large an image does he observe
A teeter-totter is made of a 3.200 m long plank with a mass of 60.0 kg, what mass must be placed at the left end so that the teeter-totter is balanced
A white billiard ball with mass mw = 1.49 kg is moving directly to the right with a speed of v = 3.06 m/s, What is the final total energy of the system
A jet airplane is in level flight. The mass of the airplane is m=8850 kg. at what angle is the airplane banked
Consider a heavy particle of mass m is place at the top (on the outside side, not inside) of a vertical hoop of radius R and mass M. find the location of the hoop center X as a function of angle theta of the falling particle
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.47 Earth years in its circular orbit around its sun, Find the radius of the exoplanet's orbit
The captain of a ship grabs hold of the wheel with one hand a distance of 0.285m from the axis of rotation to adjust the rudder. what is the magnitude of the torque
Three capacitors are connected as follows: 3.74 F capacitor and 4.52 F are connected in series, What is the capacitance of the total combination
A spaceship leaves Earth traveling at 0.65 c. A second spaceship leaves the first at a speed of 0.80 c with respect to the first. Calculate the speed of the second ship with respect to Earth if it is fired directly backward toward Earth
question1a bicycle wheel is rotating at 43 rpm while the cyclist begins to pedal harder giving the wheel a constant
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