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A ball is projected with a speed 23.8 m/s from a bridge that is 49.07 meter above the water. Use energy techniques to find the speed of the ballinstat that it strikes the water?
A 25 g glass tumbler contains 340 mL of water at 24°C. If four 20 g ice cubes each at a temperature of -3°C are dropped into the tumbler, what is the final temperature of the drink
A ranger in a national park is driving at 28.0 mi/h when a deer jumps into the road 225 ft ahead of the vehicle. After a reaction time t, the ranger applies the brakes to produce an acceleration of a = -9.00 ft/s2. What is the most reaction time a..
A point charge q1=4nC is placed at the origin, and a second point charge q2= -3nC is placed on the x-axis at x= 20cm. A third point charge q3=2 nC is to be placed on the x-axis between q1 and q2.
The escape speed from the Earth is 1.12 × 10^4 m/s, so a gas molecule traveling away from Earth near the outer boundary of the Earth's atmosphere would, at this speed, be able to escape from Earth's gravitational field.
A flywheel turns through 36 rev as it slows from an angular speed of 4.8 rad/s to a stop. Calculate how much time is required for it to complete the first 18 of the 36 revolutions
A 3000 flask is initially open while in a room containing air at 1 and 20 . The flask is then closed and immersed in a bath of boiling water. When the air in the flask has reached thermodynamic equilibrium, flask is opened and air is allowed to esc..
Two point charges totaling 7.50 µC exert a repulsive force of 0.250 N on one another when separated by 0.619 m. What is the charge on each if the force is attractive
An airtight box has a removable lid of area 2.0 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 x10^5Pa. The inside of the box is completely evacuated. What is the magnitude of force nece..
When a certain air-?lled parallel-plate capacitor is connected across a battery, it acqquires a charge (on each plate) of magnitude 131 µC. What is the dielectric constant of the slab
What are the advantages and disadvantages of constructive and deconstructive Interferences? Give typical examples of polarizations. Discuss musical equipments in the context of wavelengths and frequency.
A jet moving 500.0 km/h due east is in a region where the windis moving at 120.0 km/h in a direction 30.00 degrees north of east. What is the speed of the aircraft relative to the ground
A 101 Frisbee is 22 in diameter and has about half its mass spread uniformly in a disk and the other half concentrated in the rim. What is the magnitude of the torque
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