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Two point charges of + 20.0 oC and - 8.00 oC are separated by a distance of 20.0 cm. What is the intensity of electric field E midway between these two charges?
A) 25.2 × 106N/C directed towards the negative charge
B) 25.2 × 106N/C directed towards the positive charge
C) 25.2 × 105N/C directed towards the negative charge
D) 25.2 × 105N/C directed towards the positive charge
E) 25.2 × 104N/C directed towards the negative charge
A force that varies linearly with time according to a relation F = 4t N is applied to an object travelling with a speed of 16-m/s. If the force decelerates the object to a complete stop in 5s, determine the object's mass. Imagine the force is at f..
Electrons are accelerated so that their de Broglie wavelength is .083nm. What is the kinetic energy of the electrons so that they have this de Broglie wavelength
Objects A and B are both positively charged. Both have a mass of 138 g, but A has twice the charge of B. How large is the electric force (in N) on A
Batman and Robin are attempting to escape that dastardly villain, the Joker, by hiding in a large pool of water (n=1.33). The Joker stands gloating at the edge of the pool.
A river flows due east with aspeed of 2.2 m/s. A man steers amotorboat across the river. His velocity relative to the water is3.9 m/s due south. What is his velocity relative to the earth
You are approaching a stationary sound of 1000Hz at 35m/s. What is the change in frequency of the sound as you approach
A 38.8-cm diameter disk rotates with a constant angular acceleration of 2.60 rad/s2. It starts from rest at t = 0, and the line drawn from the center of the disk to the point P on the rim of the disk makes an angle of 57.3° with the positive x-axis a..
q1. every day our earth receives 1.55times1022 j energy from the sun. if we were able to use 0.85 percent of this
The magnitude and direction of the total magnetic field at the origin.
A freight train has a mass of 1.3 * 10^7 kg. how long doesit take to increase the speed of the train from rest to 90km/h
A 23.0 kg child plays on a swing having support ropes that are 2.10 m long. How fast will she be moving at the bottom of the swing
a 2 kg ball moving at 3 m/s hits a wall and bounces off. immediately after the collision it moves at 3 m/s in the opposite direction. what is the magnitude of the change in the objects momentum
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