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A planet's moon travels in an approximately circular orbit of radius 5.4 107 m with a period of 7 h 21 min. Calculate the mass of the planet from this information
a 40 g block of of ice is cooled to -72 C and then is added to 650 g of water in an 80 g copper calorimeter at a temperature of 24C, determine the final temperature of the system consisting of the ic
A fire hose must be able to shoot a stream of water a specified height, straight up. Calculate the gauge pressure (difference between actual pressure
A proton is at the origin and an electron is at the point x = 0.42 nm, y = 0.39 nm. Find the electric force on the proton
A viewing window in the Atlanta aquarium is 55 inches wide and 46 inches high. what is the outward force on the window
A surface encloses the charges q1=3.4uC , q2=7.0uC, and q3=-3.8uC. Find the electric flux through this surface
The length of the ice block is L1 = 0.00484 m and its temperature is T1 = -11.0 °C. The aluminum block is L2 = 0.00139 m long, Calculate the heat per second per square meter
Two tugboats pull a disabled supertanker. Each tug exerts a constant forace of 1.55*10^6n, What is the toal work they do on the supertanker
You have invented a new game and are playing it with your friends. You have a projectile launcher that fires a brick (mass=2 kg) with a speed and angle that you can adjust. What is the work done by
High-speed stroboscopic photographs show that the head of a 184 g golf club is traveling at 35.2 m/s just before it strikes a 45.9g golf ball at rest on a tee
Two spheres with uniform surface charge denisty, first with radius 7.4 cm and the other witrh radius 5.0cm, What is the surface charge density on each sphere
A factory worker moves a 23.0kg crate a distance of 4.90m along a level floor at constant velocity by pushing horizontally on it. What magnitude of force must the worker apply
the period of rotation of the moon is about 27 days, 8 hours. The mass of the moon is 7.35x10^22 kg, Find the radius of the satellites orbit
A flywheel turns through 26 rev as it slows from an angular speed of 1.3 rad/s to a stop. What is its angular acceleration
A 60.0 cm long organ pipe is filled with air and is open at both ends. What is the wavelength of the fundamental frequency
A small rubber wheel on the shaft of a bicycle generator presses against the bike tire, What is the peak emf produced by the generator at the end of 4.64 s
If a bungee cord is stretched horizontally to a length of 2.2m , the tension in the cord is 2.3n. What is the tension in the 3.8-m-long cord
An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section is 5.00 m/s. What is the pressure in the narrow section of the pipe
A 30.0-kg object has a drag force with a magnitude proportional to the square of its speed. What is its terminal velocity
A 2 kg mass dropped 2.0 m above a spring with a spring constant of 40.0 N/m. How much does the spring compress
A research submarine has a 10-cm-diameter window that is 8.7cm thick. What is the submarine's maximum safe depth in salt water
You have determine that it takes 3s for a toy car ti travel through the distance of 162 cm. Calculate the average speed of the toy car
two identical charged objectsare hanging from 26.8 cm threads from the same point on the cieling. what is the charge on each object
A steel piano wire 1.35 m long has a cross- sectional area of 0.00751 cm2. When under a tension of 68.9 N, how much does it stretch
A gasoline engine absorbs 1900 J of heat and performs 530.0 J of mechanical work in each cycle. What is the efficiency of the engine