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A steel ball of mass 0.5 kg is fired vertically up from the edge of a building 20 m high with an initial speed of 10 m/s. When it falls back on the ground at the base of the building, it gets buried in sand to a depth of 0.2 m. Determine: the average resistance force that sand exerts on the ball
A point charge (m = 1.0 g) at the end of an insulating string of length 53 cm (Fig. 16-66) is observed to be in equilibrium in a uniform horizontal electric field of E = 9500 N/C, when the pendulum's position is as shown in Fig. 16-66, with the charg..
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.5g of copper and asked to make a cylindrical wire, What length l will you choose for your wire
What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radius r3 = 2.70 m?
Refrigerant-134a enters a compressor at 180 kPa as a saturated vapour with a flow rate of 0.35 m3/min and leaves at 700 kPa. The power supplied to the refrigerant during compression process is 2.35 kW. What is the temperature R-134a at the exit of th..
What must the constant acceleration of the car be after the brakes are applied so that the car would come to rest at the stop sign.
A bullet of mass 30 g collides completely inelastically with a ballistic pendulum of mass 2.5 kg. Calculate the velocity of the bullet right before it collides with the pendulum
At a steel mill a 50 Kg chunk of iron at 22 Celsius is heated to it's melting point , completely melted , How much energy is required to heat the iron to it's melting point
illustrate what is the magnitude of the normal force exerted on the car by the walls of the cylinder at point A (at the bottom of the vertical circle)?
A 4m long, 140g rope is fixed at one end while the other is tied to a light string. what is the frequency of the third harmonic
Radio astronomers detect electromagnetic radiation at 46.0MHz from an interstellar gas cloud. What is the magnetic field strength inside the gas cloud
In a test run,a certain car accelerates uniformly from zero to 20.2m/s in 2.95s. How long does it take the car to change its speed from 10.01m/s to 20.02m/s
A 3.53kOhm resistor is connected to a generator with a maximum voltage of 121V. Find the average power delivered to this circuit
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