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100 lb block of ice slides down a frictionless plane inclined 30 degrees from the horizontal. what is the resultant force on the block?
You are on a boat in a fog and know there are cliffs ahead of you somewhere, but you cannot see them. How far away are the cliffs (in metric units)?
The electric field 6.5 cm from a small object points toward the object with a strength of 180,000 N/C. What is the object's charge?
steel rail than through the air where the speed of sound is 344 m/s at 20 oC? Hint: Calculate the speed of the wave in the two media and then take the difference between the two times.
One piston of a hydraulic lift holds 1.40x103 kg.The other holds an ice block (density = 917 kg/m3) that is 0.076 m thick. Find the first piston's area.
The frequency of a tuning fork is 358 Hz. Find the length of the shortest organ pipe which will give 6 beats/s with the fork. The velocity of sound in air is 339.1 m/s.
A particle (mass = 2.0 mg, charge = -6.0 µC) moves in the positive direction along the x axis with a velocity of 3.0 km/s. It enters a magnetic field of (2.0i + 3.0j + 4.0k) mT. What is the a
At a amusement park you went on a ride that malfunctioned. What was the angular displacement of the ride after 1.5s with an angular speed of 2.65 X 10^4 rads/s.
Find the minimal acceleration a of the block "A" along the horizontal so that masses 1 and 2 remain stationary with respect to the block "A".
A gymnast of mass 56.0 {rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {rm m/s^2} for
The kinetic friction between the block and the surface is "u". Find the angle of the incline "a" so the block goes the minimal distance along the incline. Find the distance the block moves.
A 70 kg man weighs 686 N on the Earth's surface. How far above the surface of the Earth would he have to go to "lose" 12% of his body weight?
A ball is projected upward at time = 0.0 s, from a point on a roof 70 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is Consider all quantiti
Mutations in which genes lead to transformations in the identity of entire body parts?
A loop of area 0.07 m2 is rotating at 70 rev/s with the axis of rotation perpendicular to a 0.08 T magnetic ?eld. If there are 731 turns on the loop, what is the maximum voltage induced in it?
What hormone will she prescribe for her patient?
A 500.0 g pot of water at room tempature (20.0 degrees C) is placed on a stove. How much heat is required to change this water to steam at 100.0 degrees C?
Give the diagrams of epigeal germination
If it takes 2.90 min for the water to reach a boil, what volume of water, in cm^3, was in the kettle? Stainless steel is mostly iron, so you can assume its specific heat is that of iron.
A spacecraft is in empty space. It carries on board a gyroscopewith a moment of inertia of Ig = 18.5 kg·m2 aboutthe axis of the gyroscope.
What do you think are the chances of Vanessa's first sexual experience being enjoyable?
What is the maximum speed with which a 1200- car can round a turn of radius 71 on a flat road if the coefficient of static friction between tires and road is 0.45?
A 84g arrow is fired from a bow whose string exerts an average force of 115N on the arrow over a distance of 78cm. What is the speed of the arrow as it leaves the bow?
Living things are composed only of organic elements, whereas nonliving things are made up of inorganic elements
Find the energy delivered to the motor by electrical transmission in 3.90 h of operation.