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A 200.0 N force moves 120.0 kg crate on a frictionless surface from the rest to a final speed of 9.6 m/s. What is the final kinetic energy of the crate? What is the displacement of the crate when it reaches this speed?
What is a scale useful in measuring the temperature of super cold substances
A two-stage rocket moves in space at a constant velocity of 4700 m/s. Find what is the velocity (magnitude and direction) of the 2500 kg lower stage after the explosion
A small mass is set on the surface of a sphere. If thecoefficient of static friction is µs = 0.70, at what angle would the mass start sliding
A 1 gram bug hangs on to the end of a 50 cm fan blade what is the magnitude of the frictional force between the bugs feet and the blade
An Olympic long jumper leaves the ground at an angle of 19.8 ° and travels through the air for a horizontal distance of 8.17 m before landing. What is the takeoff speed of the jumper
A particle with a charge of -5.90 * 10^-9 C is moving in a uniform magnetic field B(vector) = -(1.25 T) k (hat). The magnetic force on the particle is measured to be F(vector) = -(4.00 * 10^-7 N) i(hat) + (7.60 * 10^-7 N) j(hat). Are there compone..
An observer moving toward Earth with a speed of 0.94c notices that it takes 5.2 min for a person to fill her car with gas. Suppose, instead, that the observer had been moving away from Earth with a speed of 0.78c. How much time would the observer ..
The rectangular coordinates of a point in the x-y plane are (??,??)=(2.75, -6.10). Draw this point and label the axes and the point appropriately. Then find the polar coordinates of this point. Convert (??,??)=(8.44mm, 23°) to Cartesian coordinat..
Write and formally differentiate each term to get the second derivative with respect to X. Put it all into the equation as shown and you will see that there will be an infinite number of possible solutions, with progressively higher powers of x in..
A child has an ear canal that is 1.3 cm long. Assume the speed of sound is v = 344 m/s. At what sound frequencies in the audible range will the child.
The sun is 24 degrees above the horizon. It makes a 51 m -long shadow of a tall tree. How tall is the tree?
An aircraft starts at rest and is accelerated at 10.3 m/s2 for 9.3 s, at which time the aircraft launches. Find the distance traveled from starting point to launch point
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