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Get college assignment help at uniessay writers A 52 kg box is being pushed a distance of 7.0 m across the floor by a force vector P whose magnitude is 165 N. The force vector P is parallel to the displacement of the box. The coefficient of kinetic friction is 0.25. Determine the work done on the box by each of the four forces that act on the box. Be sure to include the proper plus or minus sign for the work done by each force. 1 applied force J 2 frictional force J 3 normal force J 4 gravity J

A 1999 news story about the discovery of three planets orbiting

A 1999 news story about the discovery of three planets orbiting the star Upsilon Andromedae (“Ups And” in Fig 8-17) stated that “ the newly discovered galaxy, with three large planets orbiting a star known as Upsilon Andromedae, is 44 light years away from Earth.” What is wrong with this statement?

Part C What current in the solenoid would be needed to

Part C What current in the solenoid would be needed to produce a field of 1.5×10−3 T but in the opposite direction?

Explain why part A repels.

Explain why part A repels.

Find the magnitude of the net force on the whole wire

Find the magnitude of the net force on the whole wire if x = 50cm and it carries a current of 8.0A in the direction shown.

Coherent light with wavelength 602 passes through two very narrow slits,

Coherent light with wavelength 602 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright fringe.For what wavelength of light will the first-order dark fringe be observed at this same point on the screen?

I need help on an infinite square well potential problem (quantum

I need help on an infinite square well potential problem (quantum mechanics).

A ball (mass 0.30 kg) is attached to the end of

A ball (mass 0.30 kg) is attached to the end of a stick. The ball is spun in a horizontal circle at a constant rate. Because of air resistance a constant torque exerted on the system to keep it spinning at that rate. Assuming that the air exerts a miniscule force on the stick (but a significant force on the ball), determine the force the air exerts on the ball.

A motorcycle has a constant speed of 28.0 m/s as it

A motorcycle has a constant speed of 28.0 m/s as it passes over the top of a hill whose radius of curvature is 109 m. The mass of the motorcycle and driver is 348 kg. Find the magnitude of the normal force that acts on the cycle

Jack and Jill ran up the hill at 3.3 . The

Jack and Jill ran up the hill at 3.3 . The horizontal component of Jill’s velocity vector was 2.3 .

A 9.0 g bullet is fired into a 12 kg wood

Get college assignment help at uniessay writers A 9.0 g bullet is fired into a 12 kg wood block that is at rest on a wood table. The block, with the bullet embedded, slides 5.0 {rm cm} across the table. The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the speed of the bullet?

The horizontal force F_h_vec would rotate the femur head clockwise in

The horizontal force F_h_vec would rotate the femur head clockwise in the hip socket, but the frictional force f_f_vec acts to prevent this clockwise rotation. The apparatus is designed such that when |vec{F_{rm h}}| > |vec{f_{rm f}}|, the femur head rotates clockwise. A sample of data collected at impending slippage of the femur is shown in the figure. Based on these data, what is the approximate coefficient of static friction mu_s between the femur head and the hip socket?

A person pulls a toboggan for a distance of 38.1 m

A person pulls a toboggan for a distance of 38.1 m along the snow with a rope directed 29.9 ° above the snow. The tension in the rope is 109 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done if the same tension is directed parallel to the snow?

A gun is fired vertically into a 1.20 kg block of

A gun is fired vertically into a 1.20 kg block of wood at rest directly above it. If the bullet has a mass of 21.0 g and a speed of 235 m/s, how high will the block rise into the air after the bullet becomes embedded in it?

A 150 kg rocket moving radially outward from Earth has a

A 150 kg rocket moving radially outward from Earth has a speed of 3.7 km/s when its engine shuts off 200 km above Earth’s surface a. Neglect air resitance. Find rocket’s kinetic energy when the rocket is 1000 km above Earth’s surface b. What is the max heigh that the rocket reaches.

A frictionless pulley, which can be modeled as a 0.87 solid

A frictionless pulley, which can be modeled as a 0.87 solid cylinder with a 0.36 radius, has a rope going over it, as shown in the figure.The tensions in the rope are 12 and 10 . What is the angular acceleration of the pulley?

A 0.50 kg mass hangs from a string which is attached

A 0.50 kg mass hangs from a string which is attached to a 1 kg box. The coefficient of friction between the box and the table top is 0.12. When the hanging mass is allowed to fall freely, the system accelerates, what is the magnitude of the acceleration of the box and hanging mass?

A 65.0 kg base runner begins his slide into second base

A 65.0 kg base runner begins his slide into second base when moving at a speed of 4.2 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. How much mechanical energy is lost due to friction acting on the runner? How far does he slide?

Path A is 7.0 km long heading 60.0° north of east.

Path A is 7.0 km long heading 60.0° north of east. Path B is 6.0 km long in a direction due east. Path C is 3.0 km long heading 315° counterclockwise from east. (a) Graphically add the hiker’s displacements in the order A, B, C.

A clerk moves a box of cans down an aisle by

A clerk moves a box of cans down an aisle by pulling on a strap attached to the box. The clerk pulls with a force of 181.0 N at an angle of 24.0◦ with the horizontal. The box has a mass of 31.0 kg, and the coefficient of kinetic friction between the box and floor is 0.530. The acceleration of gravity is 9.81 m/s2 . What is the acceleration of the box? Answer in units of m/s2.

You throw a snowball at an angle of 28.0° below the

You throw a snowball at an angle of 28.0° below the horizontal from the roof of a building that is 91.0 m above flat ground. The snowball hits the ground a distance of 44.0 m from the base of the building. Assume free fall with up as positive, and use g = 9.80 m/s2.

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