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A large fish hangs from a spring balance supported from the roof of an elevator.
a) If the elevator has an upward acceleration of 2.45m/s2 and the balance reads 70.0N , what is the true weight of the fish?
b) Under what circumstances will the balance read 35.0N ?
c) What will the balance read if the elevator cable breaks?
A spaceship and an asteroid are moving in the same direction away from Earth with speeds of 0.76c, What is the relative speed between the spaceship and the asteroid
A motor boat haeds due east at 5 m/s acorss a river that flows toward the south at 5 m/s. If the river is 125m wide, how longs does it take the boat to cross the river.
Compute the mass of a ball and speed of a puck after collision.
A disk 8.00 cm in radius rotates at a constant rate of 1,200 rev/min about its central axis. Determine its angular speed in radians/sec
A wheel rotating about a fixed axis through its center has a constant angular acceleration of 4 rad/s^2. In cerain 4s interval the wheel turns through an angle of 80 rads.
Protons in cosmic rays have been observed with kinetic energies as large 2.70 × 108 eV. How fast are these protons moving
Two small nonconducting spheres have a total charge of 93.1 ?C. When placed 1.01 m apart, the force each exerts on the other is 11.5 N and is attractive. What is the charge on each?
How much energy is lost through your hands in one minute after touching on a cold surface at 10 C compared to being exposed to cold air at 10 C
A 1500 {rm kg} wrecking ball hangs from a 20 {rm m} long cable. The ball is pulled back until the cable makes the angle of 17.0^circ with vertical.
A nearsighted person wears contacts with a focal length of ? 6.5cm, what is her uncorrected far-point distance
Find out the translational speed at the bottom of the fall where it is horizontal. Ignore the frictional losses and assume mass of the cylinder is distributed uniformly.
The top of the pool table is 0.850 m from the floor. The placement of the tape is such that 0 m is aligned with the edge of the table, calculate his break shot speed
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