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A 2-kg box is initially sliding at a speed of 15 m/s on a horizontal surface. Wind is applying a constant 5-N force at an angle 30 degrees down from the horizontal, in the opposite direction of the box's motion. The box comes to rest after traveling 20 m. What is the coefficient of kinetic friction between the box and the horizontal surface?
Determine the magnitude of door's angular acceleration.
A spherical balloon of volume 4.03 x10^3 cm3 contains helium at the pressure of 1.15 x10^5 Pa. How various moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x10-22 J.
A very long, straight solenoid with a cross-sectional area of 6.00cm2 is wound with 40.0 turns of wire per centimeter, What is the average induced emf in the secondary coil
A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. .m/s2 (b) If the ramp is inclined at 26.5° wit..
The catapult on an aircraft carrier can take an aircraft from 0 to 192 mph in 12 seconds, at which time the aircraft launches
A bank robber travelling at 75mi/hr in an escape car suddenly sees a barricade 150 m ahead. The robber slams on the breaks following a 0.75 delay (the drivers reaction time) After the brakes are applied, the car decelerates at 4.2m/s^2. Will th..
If the final angles are measured to have the values ?=10° and f= 8°, calculate the final speeds for the two pucks
A girl is using a rope to pull a box that weight 300 N across a level surface with constant velocity. what is the normal force of the floor on the box
The moment of inertia of a uniform ring is I (r) = M (r) * R^2 (r), where M (r) and R (r) denote the mass and radius of the ring. Compute the moment of inertia of this disk
When my car has been parked for a while, its tires look a wee bit ‘low,' and, when their pressure is measured at 23 C, What is the temperature of the air inside the tires
a bee that is 3m away from a person produces a buzzing sound that is barely audible (the intensity is the threshold of hearing I0) What is the decible level of 1000 bees
Particle A carries a charge of 5.0 uC, Particle B is 12.0cm, Find the magnitude and direction of the electric force on A due to B
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