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A 1.0 kg wood block is pressed against a vertical wood wall by a 12 N force at 30 degrees above the negative x-axis. If the block is initially at rest, will it move upward, move downward, or stay at rest? (Friction is present) the coefficient of the static friction is 0.5
You've always wondered about the acceleration of the elevators in the 101 story high Empire State Building. What is the magnitude of the acceleration as the elevator starts upward
When 3.78 g of nonvolatile solute is dissolved in 300.0 g ofwater, the freezing point depression is 0.646 o C. Calculate the molar mass of the solute
A weather emergency siren is mounted on a tower, 177 meters above the ground. On one hand, you would like to make the siren very loud so that it will warn as many people as possible. what is the maximum power that the siren can put out
Illustrate what is the uniform speed of a gondola when the Ferris wheel is running at full speed?
A 50 newton horizontal force pushes a 10 kg mass sitting on a horizontal surface. What is the acceleration of the mass
A contact lens is made of plastic with an index of refraction 1.38. The lens has an inner radius of curvature of +2.46 cm and an outer radius of curvature of +2.08 cm. What is the focal point of the lens?
Suppose you have two identical containers with the samevolume, both submersed in a hot water bath so that both containersare at the same temperature. One container is filled with one mol of hydrogen gas (H2) while the other holds one mole of nitroge..
A jet aircraft with a mass of 4,575 kg has an engine that exerts a force (thrust) equal to 59,700 N. What is the jet's acceleration
A juniper-wood plank measuring 0.36 ft by 1 ft by 15 ft is totally submerged in water. What is the size and the direction of the net force on it
When point charges q1 = +2.1 ?C and q2 = +8.1 ?C are brought near each other, each experiences a repulsive force of magnitude 0.66 N. Determine the distance between the charges.
In a certain cyclotron a proton moves in a circle of radius 0.650m. The magnitude of the magnetic field is 1.50 T.(a) What is the oscillator frequency (in Hz)?(b) What is the kinetic energy (in eV) of theproton?
The minimum stopping distance for a car travelling at a speed of 30 {rm m/s} is 60 {rm m}, including the distance travelled during the driver's reaction time of 0.54 {rm s}.
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