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A log splitter uses a pump with hydraulic oil to push a piston,attached to which is a chisel. The pump can generate a pressure of2.6x107 Pa in the hydraulic oil, and the piston has aradius of 0.030 m. In a stroke lasting 11 s, the piston moves 0.55m. What is the power needed to operate the log splitter's pump?
A metal ball with a mass of 3.71·10-6 kg and a charge of +5.77 mC has a kinetic energy of 4.99·108 J. It is traveling directly at an infinite plane of charge with a charge distribution of +3.21 C/m2. If it is currently 1.87 m away from the plane of c..
A glass fiber of index 1.50 is used to transmit light but is submerged in water of index 1.33. What is the critical angle for light to stay inside the optical fiber
An alpha particle (a He nucleus, containing two protons and two neutrons and having a mass of 6.48×10^-27 kg) traveling horizontally at 36.4 km/s enters a uniform, What is the diameter of the path followed by this alpha particle
A 52.1-kg high-school student hangs from an overhead bar with both hands, What is the tension in each arm when the arms make an angle of 31.00 o with respect to the vertical
a group of students have measured the time it takes for a cart to travel some distance along a level track. their best
At a playground, a 19kg child plays on a slide that drops through a height of 2.3m. The child starts at rest at the top of the slide. What is the childs speed at the bottom of the slide
a decorative light fixture in an elevator consists of a 2.0 kg light suspended by a cable from the ceiling of the
What is an index of refraction of the liquid
A rectangular fish tank measures 20 cm by 60 cm by 40 cm high. The tank is filled with water to a depth of 37 cm. What is the pressure at the bottom due to the water
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation
A parallel plate capacitor has a capacitance of 4.5 µF when filled with a dielectric. What is the dielectric constant of the dielectric
Jack was exposed to fast neutrons; he received a radiation dose of 160 rem on part of his hand, affecting 27.0 grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 11.0.
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