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Get college assignment help at uniessay writers Block 1, of mass m1 = 0.700 , is connected over an ideal (massless and frictionless) pulley to block 2, of mass , as shown. Assume that the blocks accelerate as shown with an acceleration of magnitude = 0.300 and that the coefficient of kinetic friction between block 2 and the plane is = 0.400. Find the mass of block 2, , when = 30.0.

height x = 20.0 m. A loaded 550 kg roller coaster cart has 1.9220×105 J of kinetic energy at point X, and 2.8868×105 J of kinetic energy at point Y.What is the total mechanical energy at point X?

Find the magnitude of the emf EMF induced in the loop after exactly time 6.00 s has passed since the circumference of the loop started to decrease.

A disk with a diameter of 0.1 m is spinning about an axle perpendicular to the disk and running through its center. For the frequency determined in part (a), what is the speed of a point half way between the axis of rotation and the edge of the disk? At this same frequency, what is the period of rotation of this “halfway point”? I am stuck on this question. the frequency was 1.31

Two 75.0 W (120 rm V) light bulbs are wired in series, then the combination is connected to a 230 V supply. How much power is dissipated by each bulb?

A 140-g ball collides elastically with a 310-g ball that is at rest. If the 140-g ball was traveling in the positive x-direction at 4.75m/s before the collision, what are the velocities of the two balls after the collision?

A magnifying glass has a converging lens of focal length of 18.8 cm. At what distance from a nickel should you hold this lens to get an image with a magnification of 2.47?

A communications satellite with a mass of 400 is in a circular orbit about the Earth. The radius of the orbit is 2.8×10^4 as measured from the center of the Earth. Calculate the weight of the satellite on the surface of the earth.

A small block on a frictionless, horizontal surface has a mass of 2.80×10−2 . It is attached to a massless cord passing through a hole in the surface (the figure ). The block is originally revolving at a distance of 0.300 from the hole with an angular speed of 1.95 . The cord is then pulled from below, shortening the radius of the circle in which the block revolves to 0.150 . Model the block as a particle.

A 2.36 ball is attached to an unknown spring and allowed to oscillate. The figure shows a graph of the ball’s position as a function of time .

Get college assignment help at uniessay writers When a 148 N bag of nails hangs motionless from a single vertical strand of rope, how much tension is exerted in the strand? Answer in units of N.

A 53.0-kg person jumps from rest off a 12.0-m-high tower straight down into the water. Neglect air resistance. She comes to rest 3.00 m under the surface of the water. Determine the magnitude of the average force that the water exerts on the diver. This force is nonconservative.

A 95 ball of clay traveling at speed hits and sticks to a 2.0 kg block sitting at rest on a frictionless surface. What is the speed of the block after the collision?

A stunt man whose mass is 68.7 kg swings from the end of a 3.95 m long rope along the arc of a verticle circle. Assume he starts from rest when rope is horizontal. Find the tension in rope at height 1.56m above bottom of circular arc

How much work is required to bring three protons, initially infinitely far apart, to a configuration where each proton is 1.48 E-15 m from the other two (this is a typical separation for protons in a nucleus)

An automatic defibrillator delivers 125 J of energy at a voltage of 1000 V. What is the capacitance of this device?

A proton has an initial speed of 3.96 E 5 m/s. What potential difference is required to bring the proton to rest? B) what potential difference is required to reduce the initial speed of the proton by a factor of 2? C) what potential difference is required to reduce the initial kinetic energy of the proton by a factor of 2? thanks

Bonnie and Clyde are sliding a 317 kg bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 369 N of force while Bonnie pulls forward on a rope with 359 N of force.

A diver 60 m deep in 10^circ{rm C} fresh water exhales a 1.5 {rm cm} diameter bubble.What is the bubble’s diameter just as it reaches the surface of the lake, where the water temperature is 20^circ{rm C}? Assume that the air bubble is always in thermal equilibrium with the surrounding water.

A motor keep a Ferris wheel (with mo- ment of inertia 8.29 × 107 kg · m2) rotating at 6.5 rev/hr. When the motor is turned off, the wheel slows down (because of friction) to 5.2 rev/hr in 27 s. What was the power of the motor that kept the wheel rotating at 6.5 rev/hr despite fric- tion?

An object weighs 296 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 233 N. When it is immersed in oil, it weighs 259 N.

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November 3, 2019