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Five charges are placed in a closed box. Each charge (except the first) has a magnitude which is twice that of the previous one placed in the box. All charges have the same sign and (after all the charges have been placed in the box) the net electric flux through the box is 2.3 × 107N.m2 /C. What is the magnitude of the smallest charge in the box? The permittivity of a vacuum is 8.85419 × 10-12 C2 /N.m2 Answer in units of _C.
A cube of iron, of side length 14cm, is heated from 10?C to 90?C; Calculate the total work done ON the cube and the change in internal energy of the cube
a tennis ball is thrown from ground level with velocity vo directed 30 degree above the horizontal. if it takes the
An object is placed 53.0 cm from a screen. Find the magnification of the lensmagnification if placed at the shorter distance magnification if placed at the farther distance
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles when they are 3.00x10^-15 m apart
On a 7.2 m length of string, you count 5 crests and 4 troughs. What is the wavelength of the waves on the string
A 4x 11 swimming pool slopes linearly from a 1.20 depth at one end to a 3.80 depth at the other. What is the mass of water in the pool.
The bullet emerges from the block with a speed of 200 m/s, and the block rises to a maximum height of 12 cm. Evaluate the initial speed of the bullet. V = 530 m/s
A 3.70g bullet moving at 250m/s enters and stops in an initially stationary 3.50kg wooden block on a horizontal frictionless surface, How much work was done in stopping the bullet
A petite young woman distributes her 550{\rm N} weight equally over the heels of her high-heeled shoes. Each heel has an area of 0.650{\rm cm^2}. What pressure is exerted on the floor by each heel
A tennis ball is shot out of a tennis practice machine at an angle of 18 upwards of the horizontal, at a speed of 20 m sec??1, from a height of 0.5 metre. at what height above ground would the ball be struck
The input coil of a transformer has 10 winding current to flow from 12 volt battery. how long will it take for circuit to rach its final current
A spark plug in a car has electrodes separated by a gap of 6.5×10?2in. What potential difference must be applied to the spark plug to initiate a spark
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