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You are trying to tilt a very tall refrigerator (2.0 m high, 1.0 m deep, 1.4 m wide, and 140 kg) so that your friend can put a blanket underneath to slide it out of the kitchen. Determine the force that you need to exert on the front of the refrigerator at the start of its tipping. You push horizontally 1.5 m above the floor.
At a certain point in time, the total energy of a closed system is observed to be 90 J. Which one of the following statements is TRUE?
A rock is dropped from rest into a canyon and strikes the canyon floor after 3.2 s. Approximately how deep is the canyon
An RLC series circuit has a 202 ? resistor and a 25.0 mH inductor. At 8220 Hz, the phase angle is 45.0°. Find the minimum possible capacitance of the circuit
A uniform cylinder of radius 11.8 cm and mass 28.1 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 5.90 cm from the central longitudinal axis of the cylinder. calculate what is the angular speed of the cylinder
When catching a baseball, a catcher's glove moves by 12cm along the line of motion of the ball. If the baseball exerts a force of 477N on the glove, how much work is done by the ball.
A 0.144 kg baseball is pitched horizontally at +38 m/s and after it is hit by the bat it moves horizontally at -38 m/s.
Estimate the force on a 145-gram baseball if it hits the bat at 50 miles per hour and stays in contact with the bat for 0.1 second
Figure 19-26 shows two paths that may be taken by a gas from an initial point i to a final point f. Path 1 consists of an isothermal expansion (work is 60 J in magnitude), an adiabatic expansion (work is 38 J in magnitude), an isothermal compression ..
A 130- baseball, moving along the axis with speed 35 , strikes a fence at a 45 angle and rebounds along axis with unchanged speed Give the - and - components of its change in momentum.
Electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. find the maximum magnitude of the electric field
an airplane propeller is rotating at 3293 rev/min when one of the blades breaks off at the hub. what is the angular velocity of the rotational motion of the blade about its own center of mass
If the LED emits light from a circle with diameter 10mm and is to couple to the fiber which has a50 micro meter diameter core .assume it radiates with afull cone angle 30 degree.
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