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A 215-gram sample of a metal is heated to 330oC and then is plunged into a 105-gram aluminum calorimeter cup containing 165 gram of water and a 17-gram glass thermometer at 12.5oC. The final temperature is 35.0oC. Find the specific heat of the metal (assume no water boils away.)
a uniform 12.0kg ladder is 4.0m long and is placed against a frictionless wall at 30 degress. find the frictionless force at the floor necessary to maintaain equilibrium
a 70 kg object is being pulled up a slope of 35 degrees with the horizontal so that the rope is parallel to the slope.
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the mass of the star
A space vehicle is traveling at 3570 km/h relative to Earth when the exhausted rocket motor is disengaged, What is the speed (in km/h) of the command module relative to Earth just after the separation
Two charges Q1=+6mC and Q2=+4mC are separated horizontally on a straight line, find the magnitude of the electric force between these charges
A small statue has a height of 3.5 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.5 cm tall, and located 12 cm away from the mirror. Find the focal length of the mirror.
An inflated basketball has a gauge pressure of 9.0lb/in2. What is the actual pressure inside the ball
A curve in a highway has radius of curvature 120 m and is banked at 2.8°. what is the safest speed to go around the curve
Your forensic chemistry group, working closely with local lawenforcement agencies, has acquired a mass spectrometer similar tothat discussed in the text. It employs a uniform magnetic field that has a magnitude of 0.80 T
For your diffraction grating experiment, you need to compute the wavelength of light. Derive the expression for calculating the wavelength () in terms of y1bright. Given the ratio of d to D is 1:300 and also the angle 1 is 4°.
Suppose one gallon of gasoline produces 1.1 x 108 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy
A mass spectrometer is used to examine the isotopes of uranium. What is the distance between the impact points
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