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A cart is moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way that it will remain to the cart after the cart has moved 80m. At what speed(relative to the cart), and angle must the projectile be fired.
It rolls at a steady speed for 1.9 s, then one wheel begins to stick. The train comes to a stop 6.0 m from its starting point. Illustrate what is the train's acceleration after its wheel begins to stick?
A series RCL circuit contains a 48.0-? resistor, a 2.70-?F capacitor, and a 3.75-mH inductor. When the frequency is 2590 Hz, what is the power factor of the circuit
Assume that the masses of the chains, pulleys, and ropes are negligible and the crate is rising with an acceleration of 2.9 m/s2. Determine the force also examine the tension in the upper chain.
A single loop of wire with an area of 0.0900 m2 is in a uniform magnetic field that has an initial value of 3.80 T, is vertical to the plane of the loop, and is decreasing at a constant rate of 0.190 T/s.
Suppose the skin temperature of a naked person is 34 °C while the person is standing inside a room whose temperature is 25 °C. The skin area of the individual is 2 m2.
A large wooden turntable in the shape of the flat disk has a radius of 2.00 {rm m} and a total mass of 120 {rm kg}. The turntable is initially rotating at 3 {rm rad}/{rm s} about a vertical axis through its center.
Your cup of coffee is too hot to drink when served at 95.What is mass of an ice cube, taken from a -19.0 freezer, that will cool your coffee to a pleasant 62.
Density is the ratio of an object;s mass to its volume. Would you except density to be a vector or a sdcalar quanity? Explain.
A spaceship moves past you at speed v. You measure the ship to be 287 m long, whereas an astronaut on the ship measures a length of 380 m. Find out v.
A 23 bullet traveling 245 penetrates a 3.0 block of wood and emerges cleanly at 195 .If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
A 10 cm long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 4.8 nC, is 4.2 cm from the center of the rod. What is the magnitude of the force of the bead.
Find out the moment of inertia of the wheel if the block rises to a height of = 7.70 cm before momentarily coming to rest.
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