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A rocket rises vertically, from rest, with an acceleration of 3.2 m/s^2 until it runs out of fuel at an altitude of 870 m. After this point, its acceleration is that of gravity, downward.
Velocity = 75 m/s
How long does it take to reach this point?
A train is traveling due west with a velocity of 101.2 mph and then makes a turn to the northwest with a velocity of 95 mph
A police radar has an effective range of 1.3 km, while a motorist's radar detector has a rangeof 1.8 km. The motorist is going160 km/h in a 60km/h zone when the radar detector beeps. At what rate must the motorist decelerate to avoid a speeding ticke..
Two particles are fixed to an x axis: particle 1 of charge q1 = +2.1 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.00q1 at x = 70 cm. At what coordinate on the axis is the net electric field produced by particles equal to zero.
A box sits at the top of an unfolding ramp. As the ramp isgradually tilted down from horizontal, the box will eventuallystart to slide down the ramp, the ramp then stops further tiltingand is held at this angle.
A runner with a weight of 686.7 N accelerates at a constant rate from 0 to 4.5 m/s in the first 2 seconds of a 100 m sprint. What is the net horizontal force
008 10.0 points A length of metal wire has a radius of 0.006 m and a resistance of 0.08 ?. calculate the density of free electron in the wire
What is the force between two balloons with a negative charge of 2.6 x 10-10C if the balloons are 10.0 cm apart?
An object has a mass of 0.500kg is released from the top of a building of height 7.00m. Find the time it takes for the object to strike the ground
The dialectric breakdown of air is approximately 3E6 V/m. This is the electric filed required to create a spark, What is the approximate voltage on the sphere at that instant
Light of wavelength 380 nm is required to cause electrons to be ejected from the surface of a metal. What is the kinetic energy of the ejected electrons
The human eye can detect light intensities as small as about 3 10-23 W/m2. What is the corresponding electric field amplitude
A typical helium-neon laser found in supermarket checkout scanners emits 633nm--wavelength light in a 1.1mm diameter beam with a power of 1.0mW. What is the amplitude of the oscillating magnetic field in the laser beam
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