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A 400 kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. A. Determine the force exerted by the man.
A banked circular highway curve is designed for traffic moving at 79 km/h. The radius of the curve is 155 m. Traffic is moving along the highway at 52 km/h on a rainy day. What is the minimum coeffi
A parallel-plate capacitor has an area of 10.8 cm 2 . The plates are separated by 0.9 mm and are connected across a 60 V battery. Find the magnitude of the charge on each plate.
A parallel-plate air-filled capacitor having area 48 cm2 and plate spacing 3.0 mm is charged to a potential difference of 750 V. Find the following values.
A 218-kg crate is pushed horizontally with a force of 702 N. If the coefficient of friction is 0.20, calculate the acceleration of the crate.
What is the frictional force acting on the disk?
The slope is 2.85 %, which means that the elevation increases by 2.85 m for every 100 m of horizontal distance. The mass of the roller coaster is 410 kg. Neglecting friction, what is the magnitude o
Blocks with masses of 1.0 kg, 7.0 kg, and 9.0 kg are lined up in a row on a frictionless table. All three are pushed forward by a 20 N force applied to the 1.0 kg block.
Calculate the Force of Friction(Ff) for a 5 kg aluminum block being pulled with constant velocity (uniform motion), up a steel plank that is at a 30 degrees angle to the horizontal.
Beats of frequency 4Hz are heard when a tuning fork of frequency 1000Hz and a vibrating wire are sounded together. What is the frequency of the wire
A solenoid 2.00cm in diameter & 10.0cm long has 260turns & Carries a current of 20.0A. Calculate magnetic flux through circular-section area of solenoid.
What specific physical effect was used to verify the existence of intense magnetic fields in sunspots
The coefficient of sliding friction between a rubber tire and a wet concrete road is .60. Find the minimum time in which a car whose initial velocity is 35 mi/hr can come to a stop on such a road
A 1300- car rolling on a horizontal surface has speed v = 55 when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.4 .What is the spring stiffness constant of the spri
A 60.0 g object connected to a spring with a force constant of 45.0 N/m oscillates on a horizontal, frictionless surface with an amplitude of 6.00 cm. Find the total energy of the system.
You tie the other end to a point a distance L from the pulley so that the string is horizontal between this point and the pulley. The string has a linear mass density of 0.0470 kg/m. If you want the
Find the work she does on the flight bag. Find the work done by the force of friction on the flight bag. Find the coefficient of kinetic friciton between the flight bag and the floor.
Use conservation of energy to determine the angular speed of the spool. After the 3.00 bucket has fallen 3.65 meters, starting from rest. The light sting attached to the bucket is wrapped around the
A bungee jumper with mass 68.0 jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 49.0 . He finally comes to rest 23.0 belo
A curve with a 125 m radius on a level road is banked at the correct angle for a speed of 20 {rm m/s}.If an automobile rounds this curve at 30 {rm m/s}, what is the minimum coefficient of static fri