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An elevator is traveling upward at constant speed of 2.4 m/s. At time t = 0 s an object is dropped down the elevator shaft. After 2.4 s has passed, the distance between the object and the elevator is m.
A car travels for 33.1 km south, then west for 9.4 km, and, finally, 7.5 km in a direction 73.5 deg; east of north. Find the magnitude (in m) of the car's total displacement
A block of weight 4.5 N is at rest on a horizontal table. An upward vertical force of 2.2 N is applied to the block by means of a string. What is the magnitude of the force exerted by the block
A box is sliding down an incline tilted at an angle 14.0° above horizontal. The box is sliding down the incline at a speed of 1.70 m/s. The coefficient of kinetic friction between box and incline is 0.380. How far does the box slide down the incli..
The current in the circuit if the speed v is 0.75 m/s , determine which end of the rod is positive.
An ideal gas expands at a constant pressure of 2.1 atm from 446 mL to 844 mL. Heat then flows out of the gas, What is the total heat flow into the gas
A 2-kg book with no initial velocity slides down an inclined plane with an angle of 20 degrees a total of 2 meters. The force of friction does 10 Joules of work, what is the final kinetic energy of the system as the book reaches the bottom of the ..
If an amount of heat equal to magnitude of the work done by friction is absorbed by the crate of fruit and the fruit reaches a uniform final temperature, what is its temperature change DeltaT.
A 44 cm diameter loop is rotated in a uniform electric field until the position of maximum electric flux is found. The flux in this position is 5.40 x10^5 N·m2/C. What is the magnitude of the electric field.
q1. a highway curve with a radius of 555 m is banked properly for the car travelling 150 kmh. if a 1650 kg porshe 928 s
A rescue helicopter lifts a 79-kg person straight up by means of a cable. Use the work-energy theorem and find the final speed of the person
A 35-mm slide (picture size is actually 24 by 36 {mm) is to be projected on a screen 2.10 m by 3.15 m placed 5.30 m from the projector. What focal-length lens should be used if the image is to cover the screen? Answer to be in mm please.
Two 2.00 cm diameter disks spaced 2.239 mm apart from a parallel plate capacitor. The electric field between the disks is 445,140.438 V/m. What was the electron's speed as it left the negative plate
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