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Q1. What is the frequency of ultrasound in a medium if he wave length is 3.0 x 10^-3 m and velocity is 1300 mm/ms?
Q2. An object of mass m is sliding with speed v0 at some instant across a level tabletop, with which its coefficient of kinetic friction is. It afterwards moves through a distance d and comes to rest. Which equations for the speed v0 is reasonable (choose one)? And Why?
A bullet is fired at a stationary wooden block at 200 m/s. The mass of the block is 2kg the bullet embeds in the block during the collision. What is the mass of the bullet
Within a certain material, an EM wave with lamda=1um is attenuated to 10% of its originality intensity after propagating 10cm. Determine the imaginary part of the index of refraction ni.
q1. the bottom of a box has a surface area of 2.50 m2. the mass of the box is 51.5 kg. acceleration because of gravity
During a particular car crash, it takes just 0.18 sec for the car to come to a complete stop from 50 km/hour. At what rate is the car accelerating during the crash
What is the difference between voltage current characteristics for intrinsic and extrinsic semiconductor in both forward in addition to reverse direction.
If the particle is released from rest at the midpoint C, s=100mm, and the acceleration is measured as a= (4s) m/s2 , where s is in meters, evaluate the velocity of the particle when it reaches plate B, s=200mm, and the time it needs to travel C to ..
What is the tension in the vine if Jill, whose mass is 59kg , is moving at 2.5m/s when the vine is vertical
A cell membrane has a surface area of 1.00 x 10-7 m2, a dielectric constant of 5.17 and a thickness of 8.17 nm. How many positive ions are there on the outside of the membrane
When a synchronous motor is running at synchronous speed, the damper windingproduces(A) damping torque.(B) eddy current torque.(C) torque aiding the developed torque.(D) no torque.
A solid disk of mass M= 2.0 kg and radius R= 0.25 m rotates at an angular velocity of 0.50 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
Three charges are located at the corners of an equilateral triangle with sides 20 cm. What is the electric field at the center of the triangle
question1the period of a simple pendulum defined as time necessary for one complete oscillation is measured in time
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