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Get college assignment help at uniessay writers An 9.00 {rm kg} point mass and a 15.0 {rm kg} point mass are held in place 50.0 {rm cm} apart. A particle of mass m is released from a point between the two masses 19.0 {rm cm} from the 9.00 {rm kg} mass along the line connecting the two fixed masses.

A 1450-N uniform beam is attached to a vertical wall at

A 1450-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Using the data shown in the figure, find (a) the magnitude of the tension in the wire and the magnitudes of the (b) horizontal and (c) vertical components of the force that the wall exerts on the left end of the beam.

A rolling wheel of radius r has translational velocity v as

A rolling wheel of radius r has translational velocity v as well as angular velocity w. Here you will relate translational velocity to angular velocity. Since the circumference of a circle of radius r is 2p r, every time the center of mass moves a distance 2p r, the object rotates a full circle (2p radians). If this happens in a time T then v = Dx/Dt = 2p r / T (1) and w = Dq/Dt = 2p/T (2) Combine these equations to find an expression for w in terms of v.

0.50 kg mass hangs from a string which is attached to

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

Three resistors, 26, 48, and 76 , are connected in series,

Three resistors, 26, 48, and 76 , are connected in series, and a 0.49 A current passes through them. What is (a) the potential difference across the three resistors? V

A 57.0- resistor is connected in parallel with a 123.0- resistor.

A 57.0- resistor is connected in parallel with a 123.0- resistor. This parallel group is connected in series with a 24.0- resistor. The total combination is connected across a 15.0-V battery. Find (a) the current in the 123.0- resistor A (b) the power dissipated in the 123.0- resistor. W

There are four charges, each with a magnitude of 1.5 µC.

There are four charges, each with a magnitude of 1.5 µC. Two are positive and two are negative. The charges are fixed to the corners of a 0.26 m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square. Find the magnitude of the net electrostatic force experienced by any charge. N

An airplane flies 200 km due west from city A to

An airplane flies 200 km due west from city A to city B and then 240 km in the direction of 33.5° north of west from city B to city C. In straight-line distance, how far is city C from city A?

Two plane mirrors are facing each other. They are parallel, d

Two plane mirrors are facing each other. They are parallel, d = 4 cm apart, and l = 19 cm in length, as the drawing indicates. A laser beam is directed at the top mirror from the left edge of the bottom mirror. What is the smallest angle of incidence with respect to the top mirror, such that the laser beam

At one instant a bicyclist is 75 m due east of

At one instant a bicyclist is 75 m due east of a park’s flagpole, going due south with a speed of 12 m/s. Then, 25 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 12 m/s. For the cyclist in this 25 s interval, find each of the following. (a) displacement (b) average velocity (c) average acceleration

A 15 g bullet traveling at 489 m/s strikes an 0.82

Get college assignment help at uniessay writers A 15 g bullet traveling at 489 m/s strikes an 0.82 kg block of wood that is balanced on a table edge 0.82 m above the ground. If the bullet buries itself in the block, find how far along the ground that the block lands from the base of the table.

(#8) A uniform rod, supported and pivoted at its midpoint, but

(#8) A uniform rod, supported and pivoted at its midpoint, but initially at rest, has a mass of 83 g and a length 8 cm. A piece of clay with mass 35 g and velocity 2 m/s hits the very top of the rod, gets stuck and causes the clay-rod system to spin about the pivot point O at the center of the rod in a horizontal plane. After the collisions the clay-rod system has an angular velocity ω about the pivot. With respect to the pivot point O, what is the magnitude of the initial angular momen- tum Li of the clay-rod system?

A loudspeaker of mass 24.0 {rm kg} is suspended a distance

A loudspeaker of mass 24.0 {rm kg} is suspended a distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.10 {rm m}.

A 15 g rifle bullet traveling 250 m/s buries itself in

A 15 g rifle bullet traveling 250 m/s buries itself in a 3.0 kg pendulum hanging on a 2.9 m long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the pendulum’s displacement.

How many independent springs does it take to model the thermal

How many independent springs does it take to model the thermal motion of this atom.

A river flows toward the east. Because of your knowledge of

A river flows toward the east. Because of your knowledge of physics, you head your boat 44° west of north and have a velocity of 8.0 m/s due north relative to the shore. (a) What is the velocity of the current? (b) What is your speed relative to the water

A metric ton is 1.000 × 103 kg. How many (whole

A metric ton is 1.000 × 103 kg. How many (whole number of) 95 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton? Answer in units of people.

What is the effective nuclear charge that acts on each electron

What is the effective nuclear charge that acts on each electron in the outer shell of the sulfur (Z = 16) atom. Would you think that such an electron is relatively easy or relatively hard to detach from the atom?

A coin is placed 9.0 cm from the axis of a

A coin is placed 9.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is reached and the coin slides off. What is the coefficient of static friction between the coin and the turntable? Express your answer using two significant figures.

“A coin is placed 9.0 cm from the axis of a

“A coin is placed 9.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is reached and the coin slides off. What is the coefficient of static friction between the coin and the turntable? Express your answer using two significant figures.”

rectangular block of ice 14 m on each side and 1.5

rectangular block of ice 14 m on each side and 1.5 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. A) How high does the top of the ice block float above the water level? B) How many penguins of mass 27 kg each can stand on the ice block before they get their feet wet?

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