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A 1500 kg space ship is at a height of 4.30 x 10^7 m above the surface of the Earth traveling at 3600 m/s. a.) Could this space ship be in a circular orbit? Explain.
At the end of an experiment with a radioactive element, 1.90 ng of the element remained. If 3 half lives passed, how many ng of the element were originally present?
Three resistors with values 1.0 , 2.1 , and 4.2 are connected in parallel in a circuit with a 7.2 battery. What is the total equivalent resistance?
A certain car traveling 32.0 mph skids to a stop in 35 meters from the point where the brakes were applied. In approximately what distance would the car stop had it been going 89.6 mph?
Here are the enthalpy changes when one mole of HCl gas is added to various moles of water: -16.608 Kcal for 10 mol, -17.272 Kcal for 25 mol, -17.453 Kcal for 40 mol, -17.735 Kcal for 200 mol, -17.96
A 1Kg non-stretched balloon fabric on the ground (P0= 1 bar) is attched to a 2Kg payload. One Kg of helium is places in the balloon. How many pounds of restraint are needed to keep the assembly teth
A baby's mouth is 30 cm from her father's ear and 1.50 m from her mother's ear. What is the difference between the sound intensity levels heard by the father and by the mother?
Why must the electrical field lines leave the surface of a conductor perpendicularly? Explain your answers in terms of electrical potential on and near the conductor plate surface.
A piece of wood is 0.6 m long, 0.250 m wide and 0.080 m thick. The density of wood is 600 kg/m^3. What volume of lead must be fastened underneath it to sink the wood so that its top is just even wit
Following each throw, the ball has a speed of V (m/s )relative to the thrower. After each has made one throw and one catch, (a) How fast are the astronauts moving?
An irregular piece of metal that has a mass of 14.28 grams is placed in a graduated cylinder that contains 20.0 mL of water. The water level rises to 21.8 mL. What is the density of the solid?
A 1500 kg car moving at 5.4 m/s is initially traveling north in the positive y direction. After completing a 90° right-hand turn to the positive x direction in 4.4 s, the inattentive operator d
The block moves a distance of 1.6 m down the incline, in a time interval of 0.80 s, and acquires a velocity of v2 = 4.0 m/s. The average rate at which friction force does work during the 0.80 s time i
Suppose a beam of monochromatic (single frequency) light, wavelenth 509 nm falls on a double slit whose slits are 0.0917 mm apart. The screen is 68.8 cm from the slits. a) Calculate the distance (in
Freon-12, CF2Cl2, which has been widely used in air conditioning systems, is considered a threat to the ozone layer in the stratosphere. Calculate the root-mean-square speed of Freon-12 molecules in
A galvanometer with a full-scale sensitivity of 550 and a coil resistance of 54 is to be used to build an ammeter designed to read 7.5 at full scale. What is the required shunt resistance?
The electric potential inside a charged spherical conductor of radius R is given by V = keQ/R, and the potential outside is given by V = keQ/r. Using Er = -dV/dr, derive the electric field inside an
If 3.90 mole of nitrogen gas is mixed with 11.9 moles of hydrogen gas, which reactant is in excess? Determine the amount of excess that is left over and does not react?
When the same emf device is placed across the same two resistors in parallel, the current through the emf device is 51.0 A. What is the magnitude of the larger of the two resistances?
A resistor of unknown resistance and a 50.0-O resistor are connected across a 128.0-V emf device in such a way that an 13.0-A current flows. What is the value of the unknown resistance?
A potential difference of 19.0 V is applied across a wire of cross-sectional area 2.01 mm2 and length 949 km. The current passing through the wire is 3.096×10-4 A. a) What is the resistance of t
Sketch the liquid vapor phase diagram for a mixture of two liquids that shows a significant negative deviation from Raoult's. Distillation of such a mixture though a very long column would produce
How many protons are in the beam traveling close to the speed of light in the Tevatron at Fermilab, which is carrying 10.71 mA of current around the 6.3-km circumference of the main Tevatron ring?
An electron that has a velocity with x component 2.4 x 106 m/s and y component 3.6 x 106 m/s moves through a uniform magnetic field with x component 0.027 T and ycomponent -0.15 T. (a) Find the magni
When selecting the appropriate wavelength and bandwidth for a spectrophotometric analysis, the bandwidth should be as large as possible but small compared with the band being measured. Why?