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The acceleration of a race car for the first few seconds of the race can be approximated by the a(t) = A + Bt linear formula, where t is the time measured in seconds and the values of the constants A and B are: A = 20.6 m/s2 and B = -2.40 m/s3. What is the speed of the car 1.93 s after it starts from rest? How much distance does the car cover during this 1.93 s time period?
a window has a glass surface of 1.4 103 cm2 and a thickness of 4.0 mm.a find the rate of energy transfer by conduction
a list the three main classes of meteorite and describe how they can be distinguished on the basis of their principal
(from Roger Ordidge, with alterations) The magnetic field can store energy, but it can do no work. Therefore, another agency must be responsible for doing the work that puts the energy into the magnetic field. In order for the energy in the field ..
An 9.00 {\rm kg} point mass and a 15.0 {\rm kg} point mass are held in place 50.0 {\rm cm} apart. Find the magnitude of the acceleration of the particle
Two point charges of 120 nC and 800 nC are separated by a distance of 40 cm. How much energy must be expended to reduce the separation to 30 cm?
A 1.80-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 6.00sin(2?t), Find the resonance angular frequency of the system
it is possible to generate electricity using small variations in the earths magnetic field but why havent we done it?
you have a string with a mass of 14.1 g. you stretch the string with a force of 8.49 n giving it a length of 1.97 m.
A car is moving with a speed of 27m/s down a long straight road. When it is130m from a traffic light, the light turns red. How long does it take the car to stop
When two capacitors are connected in parallel across a 10.0 V rms, 1.0 kHz oscillator, the oscillator supplies a total rms current of 523 mA. What are the values of the two capacitors
A very large number (N+1) polaroids are arranged in a sandwich, The transmission axis of each polaroid is at a constant angle, with respect to its predecessor
A plank 2.00 cm thick and 16.6 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. estimate the shear modulus of the wood
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