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Questions -
Q1. An electric forklift truck is capable of doing 5.5 x 105J of work on a 2.0 x 104 kg load to raise it vertically at constant velocity. To what height can the truck lift the load?
Q2. Estimate your own gravitational potential energy relative to the ground when you are in your bed. Show all your workings.
Q3. A 5.0 kg monkey swings from one branch to another branch 0.8 m higher. What is its change in potential energy?
Q4. How much work is required to accelerate a 1500 kg car from 18 km/h to 72 km/h?
an air-spaced parallel plate capacitor has an initial charge of .05 muc after being connected to a 10 v battery.a what
A wheel, starting from rest, rotates with a constant angularacceleration of 2.70 rad/s2. What was the angular velocity of the wheel at thestart of the 3.00 s interval
a copper crystal has a homogeneous dislocation density of 1010 m-2. what is the approximate elastic strain energy of a
A metal container, which has a mass of 8.8 kg contains 15.1 kg of water. A 2.4-kg piece of the same metal, initially at a temperature of 180.0°C, Calculate the specific heat of the metal
A 1100 wrecking ball hangs from a 14 -long cable. The ball is pulled back until the cable makes an angle of 30.0 with the vertical.
an electric oscillator is made with a 2.8 micro f capacitor and a 7.2 mh inductor. the capacitor is initially charged
An iron cube floats in a bowl of liquid mercury at0o C, By what percent will the fraction of volume submerged change
A 425-g softball is travelling at 18.6 m/s [214 degrees]. a) What is the momentum of the softball? b) Determine the x-and y-components of the softballs momentum.
A 0.50-kg mass attached to the end of a string swings in a vertical circle (radius = 2.0 m). When the string is horizontal, the speed of the mass is 8.0 m/s. What is the magnitude of the force of the string on the mass at this position?
A 140-m-wide river flows due east at a uniform speed of 3.9 m/s. A boat with a speed of 7.8 m/s relative to the water leaves the south bank pointed in a direction 39o west of north. How long does it take for the boat to cross the river
An organization that values employees who can assume new responsibilities quickly, enabling it thereby to readily accommodate changes in the demand for products, is most likely to consider which of the following traits the MOST advantageous?
In the figure below a 21 V battery is associated across capacitors of capacitances C1 = C6 = 4.0 μF and C3 = C5 = 2.5C2 = 2.5C4 = 4.0 μF. What are the (a) potential V3 across and (b) charge q3 (in C) on capacitor 3? (a) NumberUnitsV (b) NumberUnitsC
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