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Q1. If the create has a mass of 90 kg and is 1.6 m tall and 0.80 m in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent slipping.)
Q2. You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
A plastic rod is charged to -20 nC by rubbing. How many electrons have been added or protons removed
A 55.0 kg sailor jumps from a dock into a 100.0 kg rowboat at rest beside it. what is the velocity of the sailor
A bicycle wheel has a diameter of 64.1 cm and a mass of 1.81 kg. suppose that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 120 N is applied tangent..
A clock face has negative point charges -q, -2q, -3q, · · · , -12q fixed at the positions of the corresponding numerals. The clock hands do not perturb the net field due to the point charges
A proton with v=440 m/s is moving through a region in which the magnetic field is B=2.6T. what angle does the proton's velocity make with B
A falling skydiver of mass 86.0 kg accelerates downward at 6.7 m/s2. What is the upward force due to air resistance
What is the magnitude of the force of upper leg on the lower leg at the knee joint.
A string that is fixed at both ends has a length of 2.49 m. When the string vibrates at a frequency of 80.8 Hz, What is the fundamental frequency of the string
How many packs of shingles can the contractor lift before he begins to slide down the roof assuming the following Contractor weights and values for the coecient of static friction exists between the contractor and the roof.
A child in a boat throws a 5.600 kg package out horizontally with a speed of 11.00 m/s. Determine the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 23.00 kg and that of the boat is 45.00 kg.
If so how fast will the cars be traveling when they collided? If they did not, what is a distance between the cars at this point.
A bag of blood with a density of 1050 kg/m^3 is raised about 1.00m higher than the level of a patient's arm. How much greater is blood pressure at the patient's arm than it would be if the bag were at the same height as the arm.
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