Search & Filtering
1.plastic material regains its orginal shape and size when the deforming force is removed.
2.geothermal energy is a non- renewable energy supply.
3.hook's law states that force applied is directly proportional to the extension of a spring
4.impulse is the product of force and time.
Choose question
A car accelerates from 20m/s to 40m/s in 10sec.what is the distance traveled by the car during the 4th seconds?
A.25m B.27m C.300m D.150m
2.a force of 20N is applied on a body for 6s.what is the impulse on the body?
A.20Ns B.120Ns C.60Ns D.120Ns
3.an object has a final velocity of 10m/s an initial velocity of 5m/s and an acceleration of 3m/s2.calculate the distance covered by this object in its motion.
A.15m B.25m C.12.5m D.1m
(a) If the magnitude of the field at B is 40 N/C, what is the magnitude of the force on a proton at A?
(b) What is the magnitude of the field at A?
Two particles, A and B, are moving in a straight line. Take this to be the x-axis. At t = 0, particle A is trailing particle B, initially at some distance x behind B. Particle B
is accelerating at a constant 2.00 m/s2 and particle A is constantly accelerating at 3.00 m/s2. Particle A was able to overtake B after B has moved 50.0 m. How long does it take for particle A to overtake B?
Air flows steadily at a rate of 0.85 kg/s through an air compressor, entering at 10 m/s speed, 150 KPa pressure and 1.35 m3/kg specific volume and leaving at 8 m/s and 0.53 m3/kg.
Determine the value of leaving pressure and the change in specific enthalpy if the internal energy of the air entering is 105 KJ/kg greater than that of the air leaving. Cooling water in the compressor jackets add heat to the air at the rate of 60KW and the work done on the system is 106.58 kW
Show that when two sine waves of the same frequency, in phase with each other, and with amplitude of one wave twice the amplitude of the other and travelling in the same direction meet, they will interfere constructively
