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A bullet is fired in a horizontal direction with a muzzle velocity of 300m/s. In absence of air resistance, how far will it have dropped in traveling horizontal distance of 20m
a. A certain battery has a 12.0 V EMF and an internal resistance of 0.005 Ω. Find the current, terminal voltage, and power dissipated by a load with 1.000 Ω.
b. How much current moves through your fingers (resistance: 1200 ohms) if you touch them to the terminals of a 6 V battery?
with solution, thank you!
A. What is the resistance of an electric frying pan that draws 12 amperes of current when connected to a 120 V circuit?
B. If your skin were very moist so that your resistance was only 1000 ohms, and you touched the terminals of a 24 V battery, how much current would you draw?
C. A certain battery has an 18.0 V EMF and an internal resistance of 0.015 Ω. Find the current, terminal voltage, and power dissipated by a load with 0.500 Ω.
with solution, thank you!
A small turbine using compressed air has a power output of 100 W.
The enthalpy of the air at the inlet is 320 kJ/kg and the enthalpy at the outlet is 240 kJ/kg. Assume the process is adiabatic and the change in the kinetic energy is negligible. Compute the mass flow rate.
A 75 kg. block of wood rest on the top of the smooth plane surface, whose length is 4 meters and whose altitude is 1.0 meter. How long will it take for th block to slide down to the bottom of the plane when released?
The work done on a stretching a spring it to 3.50 cm from its equilibrium length is 14.0 3. (a) How much force is required to stretch it at that
distance? (b) If a block of mass 2.75 kg moving at 4.8 m/s hits and runs into the same spring at its unstretched length, what is maximum compression of the spring?
A ball is thrown from a tower 42 m. high above the ground with a velocity of 270 m/sec directed at 280 from the horizontal. How long will the ball hit the ground?
Neil Armstrong was the first man to walk on the moon. On July 20, 1969, his famous statement, "That's one small step for man, one giant leap for mankind." was received at 10:56 p.m. ( EDT) on Earth. (a) How long did it take his voice to reach Earth via radio waves? (b) At what time (in EDT) did he utter this statement at the surface of the moon. The distance between the Earth and the moon is 3.85 x 10^12 m.
A 3405 Kg stone is a place on top of cylindrical concrete (y=2.3X10^10 N/m^2 and a height of 2.1m. By how much the statue compress the stand
which one of the following has the lowest viscosity
A. Water
B. Motor oil
C. Marble syrup
D. Glue
E. None of the above
