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A skydiver jumps out of a plane and reaches her terminal speed of120 mph after falling for 15 s. How fast will the skydiver be going28.4 s later at the moment she pulls the ripcord? (The parachute hasn't deployed yet)
A laser pulse has an energy of 25 J and a beam radius of 2 mm. The pulse duration is 6 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
Space probes communicate with controllers on Earth using radio waves. How fast is the probe traveling and is it traveling towards or away from Earth
Example of either positive freedom negative freedom (N). Indicate which each is by circling the Be able to explain your choice.
An object is placed in front of a convex mirror with a 22.6-cm radius of curvature. A virtual image half the size of the object is formed. At what distance is the object from the mirror
A small, 10.0 g insect stand at one end of a thin uniform metal rod which is initially at rest on a frictionless horizontal table. What is the resulting angular speed of the rod
Use the ground-state wave function of the simple harmonic oscillator to find Δx. Assume that α=mω/h_ E=(1/2)h_*ω
A screen is placed 1.20m behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.40cm wide-that is, find the distance between the two second-order minima
A 6500 kg helicopter accelerates upward at 0.59 m/s2 while lifting a 1210 kg car. What is the lift force exerted by the air on the rotors?
A water pipe is inclined 32.0° below the horizontal. The radius of the pipe at the upper end is 3.00 cm. If the gauge pressure at a point at the upper end is 0.117 atm, what is the gauge pressure at a point 2.65 m downstream, where the pipe has narro..
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
A basketball player runs down the court, following the path indicated by the vectors A, B, and C, find the direction of the displacement of this player
A 11.0-kg object undergoes an acceleration of 2.6 m/s2. What is the magnitude of the resultant force acting on it
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