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Dave pushes his son on a sled across snow. As Dave pushes hisson speeds up. Which statement is true?A) The force of Dave on his son is larger than the force ofhis son on Dave.B) The force of the son on Dave is larger than the force onDave on the son.C) Both have the same magnitude.D) It depends on how hard Dave pushes his son.
A helicopter is ascending vertically with the speed of 8 m/s. At a height of 65m above the Earth, a package is dropped from a window.
Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.70. The ball landed 0.400 later. Next, the ball was given a net charge of 7.85 and dropp..
The first mass M (9.50 kg) is sitting on an inclined plane whose angle above the horizontal is 35 degrees. What is the minimum mass, m, in kg, needed to keep the block from sliding down the incline
Two blocks are free to slide along the frictionless wooden track shown below. The block of mass m1 = 5.02 kg is released from the position shown, Calculate the maximum height to which m1 rises after the elastic collision
The spaceship Enterprise 1 is moving directly away from earth at a velocity that an earth-based observer measures to be +0.62c. A sister ship, Enterprise 2, is ahead of Enterprise 1 and is also moving directly away from earth along the same line. ..
Estimate the phase difference between the sounds received by your ears when you are facing 90° away from the direction of the source
A homemade capacitor is assembled by placing two 9-in. pie pans 4cm apart and connecting them to the opposite terminals of a 6-V battery, Estimate the work done by the battery to charge the plates
A radio can be tuned into a particular station frequency by adjusting the capacitance in an L-C circuit. What is the inductance L of a coil connected to this capacitor if the oscillation frequency of the L-C circuit is 1.69MHz
The flywheel of an engine has a moment of inertia 2.40- {rm kg} cdot {rm m}^{2} about its rotation axis. What is its final kinetic energy.
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 670-kg car traveling with a velocity of +2.35 m/s. What is the final velocity of each vehicle
A spring stretches by 0.0157 m when a 3.22-kg object is suspended from its end. How much mass should be attached to this spring so that its frequency of vibration is f = 6.43 Hz
An object with mass 2.6kg is executing simple harmonic motion, attached to a spring with spring constant 330N/m. Calculate the maximum speed attained by the object
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