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To decrease the body temperature of a 66-kg person by 1.0 C , what mass of alcohol must be evaporated from the person's skin? Ignore the heat involved in raising the temperature of alcohol to its boiling point (why?) and approximate the human body as water. Express your answer using two significant figures.
A particle is moving with a certain speed. Its speed and momentum are being measured with respect to Earth. What was the original speed of the particle
An artillery shell is fired with an initial velocity of 300 m/s at 51.0° above the horizontal. To clear an avalanche, it explodes on a mountainside 47.0 s after firing. Illustrate what are the x and y coordinates of the shell where it explodes, re..
The critical angle for a special type of glass in air is 41.8. The index of refraction for water is 1.33. What is the critical angle if glass is immersed in water.
A car of mass M = 1200 kg traveling at 45.0 km/hour enters a banked turn covered with ice. The road is banked at an angle theta, and there is no friction between the road and the car's tires.
When a 0.2 kg mass is suspended from a vertically hanging spring it stretches the spring from its original length of 0.5 cm to a total length of 6.0 cm. what is the maximum speed of the mass as it oscillates
An object of mass 2 kg and charge 40 microC is moving with initial speed of 5 m/s towards a fixed point charge of 30 microC which is fixed. Find the position of the object when it comes to rest
In a darkened room we place a lighted tungsten bulb in a box that has one end covered with tinfoil. If we make a pinhole in the tinfoil, an image of filament appears on a screen facing the tinfoil.
A volltage drop of 0.00039 V is measured across a 1.2 m long piece of copper wire when 10 mA of current passes through it. What is the resistivity of copper
Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 1.05 percent of this energy to accelerate spaceships, then how many missions would be possible in one year
Two cars, A and B, travel in the same direction on a straight section of highway. A has a speed of 72.0 km/h, What is the speed of B relative to A
A uniform electric field exists in the region between two oppositely charged plane parallel plates, find speed of electron when it strikes second plate
an object of mass m = 6.0 kg hangs from a cord around a light pulley. The length of the cord between point P and the pulley is L = 2.0 m. What must be the linear mass density of the cord
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