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A shipping container is hauled up a roller ramp that iseffectively frictionless at a constant speed of 2.10 m/s by a2250 N force that is parallel to the ramp. If the ramp is at a24.6° incline, what is the container's mass?
kg
A bullet of mass 4.3 g is fired horizontally into a 8.60 kg wooden block at rest on horizontal surface. The coefficient of kinetic friction between block and surface is 0.13.
A 2.0 kg mass is projected from the edge of the top of a 20mtall building with a velocity of 24m/s at some unknown angle abovethe horizontal. find the kinetic energy of the mass just before it strikes the ground
What is the surface temperature of Betelgeuse, a red giant star in the constellation of Orion, which radiates with a peak wavelength of about 970 nm? Rigel, a bluish-white star in Orion, radiates with a peak wavelength of 145 nm. Find the temperature..
A string is wrapped around a wheel of radius 0.4 m and moment of inertia 25 kg-m2. If the string is pulled with a force of 60 N, what is the angular acceleration of the wheel
An unstable high-energy particle is created during a collision in the Large Hadron Collider (LHC). Its speed relative to the stationary collider is measured to be 0.995c, and the particle leaves a track 12.05 mm long before it decays.
question a 4kg cart is initially moving at 3ms on a frictionless track. it then hits an incline and stops 2m later. a
A 720gg , 50-cm-long metal rod is free to rotate about a frictionless axle at one end. While at rest, the rod is given a short but sharp 1000 N hammer blow at the center of the rod, aimed in a direction that causes the rod to rotate on the axle..
A bicycle wheel of radius 25 cm rolls a distance of 3.0 km. How many revolutions does the wheel make during this journey
q1. a 500 g rubber ball is dropped from a height of 10 m and undergoes a completely elastic collision with the earth.a
Kathy buys a sports car that can accelerate at the rate of 4.9 m/s/s. She decides to test the car by racing with her friend Stan. At what time does Kathy overtake Stan
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively. what is the friction force between the box and the surface
the cordinate of a particles in meters is given by x(t) = 32t-t^3 where time in seconds. what is the velocity as function of time
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