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In figure, replace R1with the parallel combination of two 250Ω resistors, replace R2 with a short circuit and add an open circuit in parallel with R4. What is the total resistance of the circuit in Fig.?
A stunt man drives a car at a speed of 20 m/s off a 27-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20?. How far from the base of the cliff does the car land
An object starting from rest accelerates with a constant acceleration A(none) for a time T(none) after which it moves at a constant velocity for T1 seconds. what is the total distance the object traveled
q1. a system consists of a uniform electric field of 42.6 nc directed in the positive x direction together with a
The following data table gives the position of an object during freefall. What is the instantaneous velocity of the object when it is at position 3?
A round flywheel is going 35 rad/s and the moment of inertia is25 kg-m2. It merges with an oval flywheel with inertiaof 15 kg-m2 and velocity of 12 rad/s in the opposite direction. What is the final angular velocity?
A uniform board is leaning against a smooth vertical wall. The board is at an angle above the horizontal ground. The coefficient of static friction between the ground and the lower end of the board is 0.620.
the siren on an ambulance is emitting a sound whose frequency is 2637 hz. the speed of sound is 343 ms.a if the
The components of velocity of an object moving in two dimensions are 40 m/s westward, and 28 m/s southward. What is the object's heading, in degrees
A block of mass m is accelerated across a rough surface by a (massless) rope passing over an ideal pulley and connected to a second mass m2. Derive an expression for the acceleration of the sliding block
A sinusoidal voltage ?v = (75 V) sin (160t) is applied to a series RLC circuit with L = 10 mH, C = 145 ?F, and R = 44 ?. What is the maximum current in the circuit
Slides along an x axis on a frictionless floor
A spring lies on a horizontal table, and the left end of the spring is attached to a wall. The other end is connected to a box. Obtain how far can the spring be stretched from its unstrained position without the box moving when it is released
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