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A train increases its speed from 45 to 90 km/h. Find the speed (i) at half time, (ii) at half way, assuming the acceleration to be constant. Give answers in km/h.
Blood flows in an aorta of radius 8.0 mm at 31 cm/s. Calculate the volume flow rate in liters per minute
A crane lifts a 425kg steel beam vertically upward a distance of 117m. How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s^2 Neglect frictional forces
a charged particle of mass 4.20 x 10-2 kg and charge 7.60 x 10-5 c moves from equipotential surface a at a potential of
One gallon of paint (volume = 3.78 x 10-3 m3)covers and area of 25.0 m2. What is the thickness of the paint on the wall
The compound gear to the right is located inside a truck, whose engine rotates the driving gear with a torque of 816 N·m. find the moments of inertia of both the large and small gears
A person pushes the shopping cart with a force of 100 N acting down at 45 degrees. Of the cart travelled at a constant speed of 1.00 meters per second what is the value of combined retarding force acting horizontally on the cart due to friction an..
A slingshot will shoot a 10-g pebble 22.0 m straight up. With the same potential energy stored in the rubber band, how high can the slingshot shoot a 25- pebble
A van der Waals gas undergoes an isothermal expansion from specific volume v1 to specific volume v2. Calculate the change in the specific Helmholtz function for this process.
You are given a pendulum composed of a 0.028 kg mass on the end of a 0.47 m long massless string. compute the tension in the string when the mass is at the release point, ? = 48°
A 95 long train begins uniform acceleration from rest. The front of the train has a speed of 25 while it passes a railway worker who is standing 170 from where the front of train started. What will be the speed of the last car as it passes the wor..
a lump of platinum is extruded through a die with diameter of 0.1 cm resulting in a cylindrical shape and a net
What is atmospheric pressure on top of Mt. Everest on a day when water boils there at a temperature of 80.0°C
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