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Imagine a truck with a mass of 30 metric tons (t) (1 t=1,000 kg) barrelling down a highway at a speed of 50 mi/h. What is the truck's momentum in kilograms? What is its kinetic energy in kilograms?
You push on the chair with a force of = 35.0 directed at an angle of 43.0 below the horizontal and the chair slides along the floor.Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
A dish of hot food has an emissivity of 0.40 and emits 20 W of thermal radiation. If you wrap it in aluminium foil, which has an emissivity of 0.008, how much power would it radiate.
A styrofoam box used to keep drinks cold at picnic has total wall area(including the lid) of 0.80m2 and wall thickness 2 cm. it is filled with ice, water and cans at 0 Celsius. What is the rate of heat flow into the box if temperature of the outsi..
An electron and a proton each have a thermal kinetic energy of 3×kBT/2. Compute the de Broglie wavelength of each particle at the temperature of 2050 K. (kb is Boltzmann's constant, 1.38×10-23 J/K).
An iron bolt of mass 60.0 g hangs from a string 33.1 cm long. The top end of string is fixed. Without touching it, a magnet attracts the bolt so that it remains stationary, displaced horizontally 27.0 cm to the right from the previously vertical l..
Assume a volleyball player claims a hang time of 1.25 seconds. Then that player must be able to jump a vertical distance of what.
A water pipe having a 2.9 cm inside diameter carries water into the basement of a house at a speed of 0.87 m/s and a pressure of 174 kPa, What is the speed and water pressure at the second floor
A toy spacecraft is launched directly upward. When toy reaches its highest point, a spring is released and the toy splits into two parts with masses of .c2 kg and .08 kg.
A 0.810 kg particle has a speed of 2.60 m/s at point A and kinetic energy of 8.80 J at B. What is its speed at B? reply in units of m/s.
A vertical containery with base area measuring 14.0 cm by 17.0 cm is being filled with identical pieces of candy, each witha volume of 46.0 mm3 and a mass of 0.0208 g.
llustrate what actions would you recommend to Carlos Fernandez to help Grupo Modelo sustain or improve its competitive position, especially its international operations and its long-term financial performance?
As observed from Earth, the wavelength of Hβ in the spectrum of the star Megrez in the Big Dipper is 486.112 nm. Laboratory measurements demonstrate that the normal wavelength of this spectral line is 486.133 nm. Is the star coming toward us or mo..
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