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Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 641 N at an angle of 27? with respect to the direction in which the truck is headed, while the other car pulls with a force of 1009 N at an angle of 22? with respect to the same direction.
What is the net forward force exerted on the truck in the direction it is headed?
Two people are carrying a uniform wooden board that is 3.40m long and weighs 145N. What force does the other person lift
Catapult fires an 800-kg rock with an initial velocity of 100 m/sat a 40° angle from ground. What is the magnitude of the horizontal impulse
A 50 kg box is being pushed a distance of 7.0 m across the floor by a force whose magnitude is 164 N. The force is parallel to the displacement of the box.
Find out the magnitude of that push.
If an amount of heat Q_H is extracted from a hot reservoir (at temperature T_H) but is simply wasted by dumping into a cold reservoir, by how much has the entropy of the Universe increased
You land on a spherical asteroid and take a walk for 3km. You notice that the stars ahead of you rise 36 degrees as you walk
An object has a kinetic energy of 279 J and a momentum of magnitude 24.3 kg·m/s. Find the speed and the mass of the object
Venus has a mass of 4.87 1024 kg and a radius of 6.05 106 m. Assume it is a uniform solid sphere. What is the rotational kinetic energy of Venus on its axis
An immersible heater coil is to be designed to heat an insulated container with 4 liters of distilled water from 20 degrees to 50 degrees C in less than 30 minutes. what is the resistance of the heating coil
An ideal gas initially at 324 K is compressed at a constant pressure of 27 N/m2 from a volume of 3.0m3 to a volume of 1.8m3. what is the final temperature of the gas
An initially uncharged 4.53x10-6 F capacitor and a 7250 ohm resistor are connected in series, Calculate the circuit's time constant
A cyclist approaches the bottom of a gradual hill at a speed of 11 meters per second. find the speed at which the cyclist crests the hill
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