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You drive your car along a straight road for 8.4 km at 70 km/h, and then it runs out of petrol and stops. You then walk along the road for 2.0 km in 30 min to reach a petrol station.
(a) What is your overall displacement (in m) from the beginning of your drive to your arrival at the petrol station?
(b) What is the time (in s) from the beginning of your drive to your arrival at the petrol station?
(c) What is your average speed (in m/s) from the beginning of your drive to your arrival at the station?
(d) After getting the petrol, you get driven back to your car on a motorbike. It starts from rest and accelerates at 12 m/s^2. How long does it take to reach your car?
A projectile is fired from the surface of the Earth with a speed of 200 meters per second at an angle of 30 degress above the horizantal. If the ground is level, illustrate what is the maximum height reached by the projectile?
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One mole of an ideal gas does 2 600 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm, Determine the initial volume of the gas
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Two parallet wires separated by 7.0 cm repel each other with a force per unit length of 1.5 x 10^-4 N/m. The current in one wire is 3.0 A
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sketch the frequency spectrum representing a harmonic vibration of frequency 10v, modulated harmonically at a frequency v.
The velocity of a particle moving along the x axis varies in time according to the expression v(t)= a+bt^2 where a=60 m/s, b=5.31 m/s^3, and t is in seconds. Discover the average acceleration in the time interval from t=0 to 3.37 seconds.
A 0.32 kg body undergoes simple harmonic motion of amplitude 9.1 cm and period 0.40 s. What is the magnitude of the maximum force acting on it
a what is the entropy change of a 15.2 g ice cube that melts completely in a bucket of water whose temperature is just
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