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Q1. A force vector points at an angle of 64.9 ° above the +x axis. It has a y component of +276 Newton's (N). Find out (a) magnitude and (b) x component of the force vector.
Q2. A 144 g cube of ice at 0C is dropped into 1.4 kg of water that was originally at 85 C. What is the final temperature of the water after the ice has melted?
Q3. A spring with a spring constant of 30 N/m is stretched 0.16 m from its equilibrium position.
How much work must be done to stretch it an additional 0.076 m?
An athlete on a trampoline leaps straight up into the air with an initial speed of 5.1 m/s, find the speed of the athlete when she is halfway up to her maximum height
An object is held up by two ropes. rope 1 makes an angle of 65 degrees above horizontal and the tension in it is T1 = 26N. rope 2 makes an angle of 32 degrees above horizontal and the object is in equilibrium. what is the tension in rope 2 (T2) an..
q1. an airplane is flying with a velocity of 83.0 at an angle of 22.0 above the horizontal. when the plane is a
A box of mass 15 kg is dragged by a 50 N horizontal force a distance of 10 m over a rough surface with the coefficient of friction = 0.14 the work done by friction force.
A revolving door consists of four rectangular glass slabs,with the long end of each attached to a pole that acts as the rotation axis. Find the rotational inertia of the entire door
q1. a certain compact disc player draws a current of 290 ma at 36.0 v. how much power is necessary to operate the
A rifle with a barrel length of 64cm fires a 12gbullet with a horizontal speed of 400m/s. What resistive force (assumed to be constant) does the wood exert on the bullet
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
The working substance of an engine is 1.00 mol of diatomic gas. The engine operates in a cycle consisting of three steps, Find the efficiency of this cycle
Assume this is the innermost line of interference (m = 0) and that speed of sound in air is 331 m/s, find the (linear) frequency of the sound in Hz.
A cylinder is fitted with a piston that is connected to the bottom by a spring. Find the work done by pressure in compressing the spring
If frame rate increases what happens to the PRF
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