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Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Calculate the magnitude and duration of the acceleration
A partly-full paint can has 0.79 U.S. gallons of paint left in it. What is the volume of the paint and how thick is the layer of wet paint
Two nanowires are separated by 1.0 nm as measured by STM. Inside the wires the potential energy is zero, Estimate the probability that the electron passes from one wire to the other
A car changes it speed from rest to 12 km/hr in 4sec .If the mass of the car is 2000 killograms what is the net force acting on the car
A 75 kg skater, starts at 6m above the ground, potential energy =0 at 2m above the ground. Calcualte the percentage difference between the two speeds
In the above animation a massive block is attached to a spring. It is sliding back and forth on a frictionless table. The spring has a spring constant 250 N/m. Determine the mass of the block
A 75kg skater starts at a height of 6m above ground, the speed at the lowest point of the track is 10.84 m/s^2. Calculate the speed of the skater
At which angle will the photon scatter with respect to its original direction? (The accepted unit abbreviations for angles are either 'deg' for degrees or 'rad' for radians.)
What is the weight of the heaviest fish that can be pulledup vertically when the line is reeled in (a) at a constant speedand (b) with an acceleration whose magnitude is 2.0 m/s 2
A charge of -270e is uniformly spread through the volume of a sphere of radius 2.10 cm. What is the volume charge density in that sphere
A 10 kg picture is held in place by two wires, the first hanging at 35 degrees to left of vertical and second at 45 degrees to right of vertical
Compute the centripetal acceleration of a point on Earth's equator given earth's 24 H rotation period. Compare your answer with g=9.80 m/s
A geologist finds that a Moon rock whose mass is 10.51 kg has an apparent mass of 6.28kg when submerged in water. What is the density of the rock
a bottle has a mass of 35 g when empty and98.45 g when filled with water. what is the specific gravity of the other fluid
A golfer drives a golf ball with a velocity of 100ft/sec and an angle of 45 degrees, Find the time of travel for the ball
A 4.0- kg wooden block rests on a level table. The coefficient of friction between the block, What is the acceleration of the wooden block
Interactive LearningWare 18.2 provides one approach to solving problems such as this one. Determine the net force exerted on q1 by the other two charges
A 5.5kg block is initially at rest on a frictionless horizontal surface. It is pulled with constant horizontal force of 3.8 newtons. How far does it move in this time
A certain bivalent metal has a density of 6.458 g/cm3 and a molar mass of 92.8 g/mol. Calculate the number density of conduction electrons
Two particles are fixed to an x axis: particle 1 of charge -4.00 10-7 C at x = 6.00 cm, and particle 2 of charge +4.00 10-7 C at x = 42.0 cm
A car travels with an initial velocity of 2 meters per second, at initial position of 0 meters with an accerleration of 2 meters per second at time of 2.0 seconds
If the hanging 13.8 kg block falls a distance 0.633 m before coming to rest, calculate the coefficient of kinetic friction between the block m1 and the surface
Two kids of masses 45 kg and 30 kg sit on the opposite sides of a seesaw. The 45 kg kid sits in the left at a distance of 54 cm from a frictionless axle. determine The force that the axle must exert
A wheel is mounted on a stationary axle which we can assume frictionless. As a result, the wheel can turn freely but cannot translate. How much work is done by you on the pulling
A toy is made with three equal masses of 100 grams in the vertices of an equilateral triangle of side 7 cm. Determine the position of the center of mass of this object