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A skateboarder, starting from rest, rolls down a 12.5 m ramp. When she arrives at the bottom of the ramp her speed is 6.10 m/s.
(a) Determine the magnitude of her acceleration, assumed to be constant. . m/s2
(b) If the ramp is inclined at 26.5° with respect to the ground, what is the component of her acceleration that is parallel to the ground? . m/s2
Suzanne observes two light pulses to be emitted from the same location, but separated in time by 2.70 µs. How fast is Mark moving relative to Suzanne
Find the energy of a photon that is emitted when an electron in a hydrogen atom undergoes a transition from the n=7 level
A certain projectile is launched with an initial speed v0. At its highest point its speed is v0 / 4. What was the launch angle
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
When the skateboarder reaches the highest point, how far is this point horizontally from the end of ramp.
During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 230 J from 440 J. Explain how high does she rise during this interval? Neglect air resistance.
The position and momentum of a 3.01 keV electron are simultaneously determined, what is the minimum percentage uncertainty in its momentum
A bullet with a mass of 4.25g , traveling horizontally with a speed of 434m/s , is fired into a wooden block with mass of 0.786kg, What is the decrease in kinetic energy of the bullet
The current from an AC source is given by: I(t) = 6.50 sin(84.0 t + 1.090 ) mA, What would the phase shift be in degrees
A 200 mL volume of neon gas is at 1.2 atm of pressure. If it was heated from 250 K to 500 K what is the volume if the pressure is held constant
A conical pendulum is formed by attaching a 50 g mass to a 2 m string. The mass swings around a horizontal circle of radius 1 m. What is the acceleration of the mass
A 0.150kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.710m/s, Find the magnitude of the final velocity of the 0.150 kg glider
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