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Sarah weighs 569.8 N on the Earth's surface. On the surface of planet X, which has 4 times the mass of Earth, Sarah weighs 253.2 N. What is the radius of planet X?
If the slope is not frictionless so that the skier has a final velocity of 6 m/s, compute the force of friction (assuming it is constant), and the coefficient of kinetic friction.
A 300 g bird flying along at 5.5 m/s sees a 10g insect heading straight toward it with a speed of 25 m/s. What is the bird's speed immediately after swallowing
Two narrow slits 0.204 mm apart are illuminated by light of wavelength 580. nm. The light falls on a screen 1.48 m away from the slits. What is the angular seperation between adjacent maxima
A proton and an electron form two corners of an equilateral triangle of side length 1.9 x 10-6 m. What is the magnitude of the net electric field these particles produce at the third corner?
The centers of a 11kg lead ball and a 100g lead ball are separated by 9 cm. what is the ratio of this gravitational force to the weight of the 100 g ball.
aqueous solutions of sodium hydroxide and ironiii sulfate are mixed. write the balanced molecular equation for this
The larger molecule HI has a bond length of 160.92 pm (H=1, I=127). its bond's force constant is 314 N/m. what are the frequencies of light for that will excite the lowest energy rotational and vibrational translations
The diameter of a blood vessel narrows by 70% due to the presence of a plaque on the blood vessel walls. what is the systolic blood pressure in the narrowed vein (in mmHg)
A large, hot pizza 86 cm indiameter and 2.0 cm thick, with a temperature of 104°C, floats in outer space. What is the order of magnitude of its rate of energy loss
An amusement park ride called the Rotor consists of a room in theshape of a vertical cylinder (1.98 m inradius) which, once the riders are inside, begins to rotate,forcing them to the wall.
A toaster draws a current os 5 amps when it is connected to a 110 volt ac line. what is the power consumption of the toaster
Suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0.954c. what is your breathing rate
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