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A car has an initial position of x= 0 m,an initial velocity of 0 m/s, and a constant acceleration of 4.4 m/s2 .What is its velocity when the time is 5.6 seconds? I know v=at, but do i do 4.4*5.6 or 4.4^2*5.6?
Two Polaroids are aligned so that the light passing through them is a maximum. At what angle should one of them be placed so that the intensity is subsequently reduced by half?
radium ra decays to radon rn which decays to polonium. if at t 0 a sample is pure radium how much polonium does it
A high-voltage power line carries a current of 120A at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, 63 degrees below the horizontal. Find the magnitude of the magnetic force exerted on a 290m length..
A ball of mass m is suspended from a rope of length R. the ball is set into freely swinging circular motion in a vertical plane. Find the centripetal acceleration of the ball at the bottom of the circle
A mass on a spring with constant 3.63 N/m vibrates with position given by the equation x = (5.00 cm) cos(3.10t rad/s). What is the maximum rate of energy transformation
a steel wire of length 1.6 m and diameter 1.10 mm is joined to an aluminum wire of identical dimensions to make a
An oscillator consists of a block attached to a spring (k = 475 N/m). At some time t, the position (measured from the system's equilibrium location), velocity, and acceleration of the block are x = 0.420 m, v = -11.9 m/s, and a = -139 m/s2. a)Calcula..
A 5.00-kW motor is used to pull a 20.0-kg crate up a 15.0°-incline of length 4.00 m. At what average velocity can the motor move the crate up the incline
(a) How much charge can be placed on a capacitor with air between the plates before it breaks down if the area of each plate is 6.00 cm2? (b) Find the maximum charge if bakelite is used between the plates instead of air.
If the percentage standard error in measuring voltages and currents is 2%, the percentage standard error in measuring the radius of the path is 3%, what is the percentage standard error in finding e/m
A train with a total mass 8.00E+6kg rises 775m as it travels a distance of 55.0km along a steady slope at a constant speed of 16.0km/hr. The frictional force on the train is 0.600 percent of the weight. Discover the kinetic energy of the train. Disco..
a 5 kg. fish swimming at 1 m/s swallows a 1 kg. What is the velocity of the smaller fish before lunch
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