Search & Filtering
A 10 KG BLOCK LIES ON A FRICTIONLESS HORIZONTAL SURFACE.
A. WHAT FORCE WILL GIVE IT AN ACCELERATION OF 500 CM/S2 ?
B. WHAT CONSTANT FORCE WILL GIVE THE SAME BODY A VELOCITY OF 2 M/S AFTER 1 S ?
A 2.5 KG MASS AND A 4 KG MASS ARE ATTACHED TO A LIGHT WEIGHT CORD THAT PASSES OVER A FRICTIONLESS PULLEY. THE HANGING MASSES ARE LEFT FREE TO MOVE. FIND THE
A. ACCELERATION
B. TENSION OF THE CORD
A 5000 KG TRUCK IS RUNNING AT 72 KPH.
a. ) IF IT IS TO BE STOPPED BY A CONSTANT RETARDING FORCE IN 10 S. WHAT IS THE DECELERATION ?
b ) WHAT IS THE RETARDING FORCE ?
Perform the following operations
A. Write the 2's compliment of the following number: 10111110
B. Write the 8's compliment of the following number: 763 (1)
C. Write the 7's compliment of the following number: 476 (1)
D. Write the 15's compliment of the following number: FDB96
E. Write the 10's compliment of the following number: 96099
For a certain gas, R = 0.277 kJ/kg-K and k = 1.384. a) What are the value of cp
and cv? b) What mass of this gas will occupy a volume of 0.425 m3 at 517.11
kPaa and 26.7 0C? c) If 31.65 kJ are transferred to this gas at constant
volume, what are the resulting temperature and pressure?
A spherical balloon is 40 ft in diameter and surrounded by air at 60 0F and
29.92 in Hgabs. If the balloon is filled with hydrogen at a temperature of 70
0Fand atmospheric pressure, what total load can it lift? R of hydrogen is
766.54 ft-lbf/lbm-R. (2381 lb)
A 10 ft3 tank contains gas at a pressure of 500 psia, temperature of 85 0F and
a mass of 25 lbm. A part of the gas was discharged and the temperature and
pressure changed to 70 0F and 300 psia, respectively. Heat was applied and
the temperature was back to 85 0F. Find the final mass, volume and pressure
of the gas. (15.43 lbm, 10 ft3, 308.5 psia)
Direction: Show your solutions.
1. An electronic device has a resistance of 20Ω and a current of 15A. What is the voltage of the device?
2. A 3V potential difference is applied to a 6Ω resistor. What is the current that flows into the resistor?
3. A subwoofer needs a household voltage or 110V to push a current of 5.5A through its coil. What is the resistance of the subwoofer?
a tank of base area 120cm by 80cm contains water to a depth of 50cm, if the base has a side outlet of diameter 16cm, what would be the required force to push the water through the base outlet?
How high should a 2 kg mass be lifted from the ground if it is thrown upward at speed of 15 m/s? ( Assume g=10 m/s²)
