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Q. How many joules of energy are necessary to heat a sample of water with a mass of 46.0 grams from 0.0 àC to 100.0 àC? (Use 4.184 J/gàC for the specific heat of water.)
Q. A box slides down a 22° ramp with an acceleration of .92m/s2. Determine out the coefficient of kinetic friction between the box and the ramp.
What must the charge (sign and magnitude) of a particle of mass 1.40 be for it to remain stationary as placed in a downward-directed electric field of magnitude 670.
A train is travelling up a 5.0 degree incline at a speed of 2.25m/s when the last car breaks free and begins to coast without friction. a) How long does it take for last car to come to rest momentarily? b) How far did the last car travel before mo..
A gasoline engine absorbs 2,600 J of heat and performs 1,000 J of mechanical work in each cycle. Find the total of heat expelled in each cycle.
approximately what is the mass of an object whose weight equals the force from part "b"? can you lift such a mass.
An electric motor rotating a workshop grinding wheel at a rate of 107 rev/min is switched off. Assume the wheel has the constant negative angular acceleration of magnitude 1.70 rad/s2.
A thunderstorm drops 6.0cm of rain on a city that covers an area of 33 km by 45 km. approximation the number of raindrops that fell during the storm. You could assume the diameter of a raindrop is 2 mm.
A small piece of dust of mass m = 1.50g travels horizontally through an electric air cleaner in which the electric field is 498N/C. The electric force on the particle is equal to weight of the particle.
what is the magnetic force per meter exerted by one bolt. After the first spring compresses a distance of 28.5 cm, the second spring acts with the first to increase the force as additional compression occurs as shown in the graph. The car comes to ..
A child attempts to drink water by a 100 long straw but finds that water rises only 75 .By how much has the child reduced the pressure in her mouth below atmospheric pressure.
Upton Chuck is riding the Nitro at Six Flags Great Adventure. If Upton free falls for 2.55 seconds, what would be his final velocity and how far would he fall.
A 370-kg sailboat has an acceleration of 0.87 m/s2 at an angle of 64° north of east. Find the magnitude and direction of the net force that acts on the sailboat.
With two fingers, you hold an ice cream cone motionless upside down the mass of the cone is m, and the coefficient of static friction between your fingers and the cone is? When viewed from the side, the angle of the tip is 2?
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