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Get college assignment help at uniessay writers Two balls, of masses m A = 37 g and m B = 76 g, are suspended as shown in the figure . The lighter ball is pulled away to a 60 degrees circular angle with the vertical and released. What is the speed of the lighter ball before impact?

“In Fig. 7.11, a block of mass 2.0 kg is placed on a compressed vertical spring that is compressed 0.050 m. (The spring and the block are not attached.) The spring is released, and it propels the block vertically upward. When the block has risen 0.60 m above its initial position, its velocity is 1.7 m/s. How much potential energy was originally stored in the spring? See attachment. Please provide step-by-step method.”

In Fig. 7.12, a block of mass m is moving along the horizontal frictionless surface with a speed of 5.70 m/s. If the slope is 11.0° and the coefficient of kinetic friction between the block and the incline is 0.260, how far does the block travel up the incline?

A hunter aims directly at a target (on the same level) 80.8 m away. If the bullet leaves the gun at a speed of 177 m/s, and misses by 1.02 m, at what angle should the gun be aimed so as to hit the target?

A potential difference of 90 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na ) from the interior of the cell?

Compute the path radius if the particle is an electron with a speed of 1.0e5m/s traveling in a region where the field strength is 0.50mT .

How long would you make the solenoid in order to produce a field of 1.2e−3T at its center?

My comet is 4 inches in diameter a real comet can have up to a diameter of 750 meters so that would be my scale factor I,m not sure how to scale 4 inches with 750 meters.

Part B: Find if they are in opposite directions.

The pulley system shown in Figure 6-25 is used to lift a 39 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 2.9 m/s2. (a) Determine the force. (b) Determine the tension in the upper chain. (c) Determine the tension in the lower chain.

Get college assignment help at uniessay writers A long, straight wire (radius = 2.5 mm) carries a current of 4.0 A distributed uniformly over a cross section perpendicular to the axis of the wire. What is the magnitude of the magnetic field at a distance of 1.2 mm from the axis of the wire?

A long, straight wire (radius = 1.8 mm) carries a current of 4.7 A distributed uniformly over a cross section perpendicular to the axis of the wire. What is the magnitude of the magnetic field at a distance of 1.0 mm from the axis of the wire?

Suzie has a mass of 66kg. She is rollerblading 26 miles per hour. she notices a group of workers and makes a quick stop in 0.1 seconds. What is her acceleration?

In Figure, the cube is 40.0 cm on each edge. Four straight segments of wire—ab, bc, cd, and da—form a closed loop that carries a current I =5.00 A, in the direction shown. A uniform magnetic field of magnitude B = 0.020 0 T is in the positive y direction. Determine the magnitude and direction of the magnetic force on each segment.

The longest recorded pass in an NFL game traveled 89 yards in the air from the quarterback to the receiver. Assuming that the pass was thrown at the optimal 45 ^circ angle, what was the speed at which the ball left the quarterback’s hand?

A m1 = 17.0 kg object and a m2 = 11.5 kg object are suspended, joined by a cord that passes over a pulley with a radius of 10.0 cm and a mass of 3.00 kg (Fig. P10.46). The cord has a negligible mass and does not slip on the pulley. The pulley rotates on its axis without friction. The objects start from rest 3.00 m apart.

A racetrack has the shape of an inverted cone, as shown below. On this surface the cars race in circles that are parallel to the ground. For a speed of 34 m/s, at what value of the distance d should a driver locate his car if he wishes to stay on a circular path without depending on friction?

An 9.00 {rm kg} point mass and a 13.5 {rm kg} point mass are held in place 50.0 {rm cm} apart. A particle of mass

chair of weight 95.0 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 34.0below the horizontal and the chair slides along the floor.

a woman weighing 580N does a pushup from her knees as shown. what are the normal forces of the floor on each of her hands?

After a 0.250-kg rubber ball is dropped from a height of 1.80 m, it bounces off a concrete floor and rebounds to a height of 1.45 m. a)Determine the magnitude and direction of the impulse delivered to the ball by the floor. magnitude? kg · m/s direction? (b) Estimate the time the ball is in contact with the floor to be 0.06 seconds. Calculate the average force the floor exerts on the ball. magnitude? direction?

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November 3, 2019