Physics Vectors Level: Misc Level
A force of magnitude N makes an angle of 225o with the positive x- axis. Find the x and y scalar components of the vector.
Physics Ray Optics Level: Misc Level
Three vectors A ,B, and C are such that A+B=C and I A I 2+ I B I2 =IC I 2. Which of the follwing statements is correct?
Physics Properties Of Matter Level: Misc Level
A compressed spring that obeys Hooke's law has a potential energy of 18J . If the spring constant of the spring is 4 N/cm , find the distance by which the spring is compressed.
Physics Units Level: Misc Level
1 Watt is the same as:
(a) 1 kg m2 /s2
(b) 1 N m
(c) 1 J s
(d) 1 kg m2 /s 3
Physics Work,Power & Energy Level: Misc Level
A 70 kg cart is pushed for 50 m with a constant velocity upon a 45% frictionless incline. Find the work done on the cart. ( Assume g = 10 m/s2)
Physics Rotational Mechanics Level: Misc Level
A 200 g object is moving in a circle of radius 4 m with a uniform speed of 6 m/s. The net force acting on the object is:
Physics Work,Power & Energy Level: Misc Level
A 0.4 kg ball is thrown vertically upward with a speed of 30 m/s. The ball reaches a height of 40 m. Assuming g =10 m/s 2, the energy dissipated due to air friction is:
Physics Properties Of Matter Level: Misc Level
An ideal gas is held in a container at constant volume, Initially, its temperature is 10.0 degrees celsius and its pressure is 2.50 atm.What is its pressure when its temperature is 80.0 degrees Celsius?
i) what is the pressure of the gas if it is cooled to -20 degrees celsius?
Physics Heat & Thermodynamics Level: Misc Level
A perfectly insulated calorimeter contains 500 mL of water at 30 degrees Celsius and 45 g of ice at 0 ( zero ) degrees celsius. Determine the final temperature of the system.Keep units consistant.
Physics Force & Laws Of Motion Level: Misc Level
A 3 kg ball of putty moving at 1 m/s collides and sticks to a 2 kg ball initially at rest. The putty and ball then move with a momentum of:
(a) 4 Ns
(b) 1 Ns
(c) 3 Ns
(d) 2 Ns
(e) 0 Ns
Physics Force & Laws Of Motion Level: Misc Level
In an inelastic collision, the final total momentum is
(a) the same as the inittial momentum
(b) less then the initial momentumse
(c) none of these
(d) more than the initial momentum
(d) more tha
Mathematics Integration Level: Misc Level
if and
find a and b
Mathematics Integration Level: Misc Level
If find the value(s) of a
Mathematics Integration Level: Misc Level
Evaluate the following definite integral
Mathematics Integration Level: Misc Level
Evaluate the following definite integral
