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When Jeff ran up a hill at 6.0 m/s, the horizontal component of his vector was 4.5 m/s. What was the vertical component of Jeff's velocity?
A 60 kg suitcase is being pulled along the ground by means of a strap which exerts a force of 20N at an angle of 30 degrees above the horizontal. what is the normal force exerted by the ground
a diffraction grating with 345 linesnm is 1 m in front of a screen. what is the wavelength of light whose first-order
Calculate the increase in internal kinetic energy (that is, for the ship and the shell). This energy is less than the energy released by the gun powder-significant heat transfer occurs
In an L-R-C series circuit, the rms voltage across the resistor is 28.4 V, across the capacitor it is 91.4 V and across the inductor it is 49.3 V. What is the rms voltage of the source
a resting homogenous sphere starts at a vertical height h 45.6m above the floor at the upper end of a wavy track. it
A typical human cell is approximately 10 um in diameter and enclosed by a membrane that is 5.0 nm thick. What is the volume of the cell membrane
A hunter on the ground fires a bullet in the north-east direction which strikes a deer 0.25 miles from the hunter. what are the coordinates as determined by an observer
A physical pendulum in the form of a planar object moves in simple harmonic motion with a frequency of 0.220 Hz. Determine the moment of inertia of the pendulum
Find a strategy using the rope that will permit the student to reach the ground safely.
A 0.1 kg block is attached to a spring with a constant 2.5 N/m and oscillates on a frictionless table. Its velocity is 0.2m/s when x=0.05. What is the amplitude of oscillations? What is the ball's maximum acceleration?
A 145 g baseball is dropped from a tree 9.0 m above the ground. With what speed would it hit the ground if air resistancecould be ignored
A plastic rod is rubbed with a cloth, and in the process it acquires a charge of ?2.1×10E?8C. How much does the mass of the rod increase by
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