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A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what is the mass of the frog?
A train starts from rest and travels in a straight line with acceleration 1.5 m/s2 for 30 seconds. It then travels with a constant speed for 2 minutes. calculate the average velocity over the duration of the trip
A 44-g ball consists of a plastic spherical shell and a water-filled core. the shell has an outside diameter equal to 41.6 mm and an inside diameter equal to 16.5 mm. What is the density of the plastic?
Estimate the maximum centrifugal and coriolis forces that you would experience on a ferris wheel in Melbourne, FL. How does this compare with gravity? (Please use the earth's surface as the reference frame).
A car of mass 960 travels at a speed of 30 along the straight road. The driver sees a red traffic light ahead, and applies brakes. The coefficient of friction between the car tyres and the road is 0.88. Take the acceleration due to gravity to be 9.80..
A 25C capacitor is charged to a potential of 18V. (a) How much charge is stored on the capacitor? (b) The potential is then changed so that the charge becomes 5.9x10-4C. What is the change in potential?
You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall. What minimum speed will allow the ball to clear the roof
A 0.410kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 22.0N/m . The block rests on a frictionless surface. A 6.00×10^2kg wad of putty is thrown horizontally at block, hitting it with a s..
In the typical X-ray lamp. The electrons are accelearated in the potential difference of 10000V before hitting the water cooled electrode. Find the shortest wavelength of X-rays
Assume that the net horizontal force is due to rolling friction only and take free-fall acceleration to be = 9.80 .What is the coefficient of rolling friction for the tire under low pressure.
A simple model of the Earth includes a dense spherical core of radius 4200 km and a less dense spherical shell of thickness 2180 km, determine the rotational kinetic energy of Earth
a transverse periodic wave is represented by the equation z(y,t) = 1.50cm sin(1250 rad/s t + 10.0m -1 y). What is the velocity of the wave and which direction
An insect 3.75 mm tall is placed 20.0 cm to the left of a thin planoconvex lens. Calculate the location of the image this lens forms of the insect
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