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A 1.20 × 103-kg race car is driving around a circular track of radius 159 m. In the instant shown in the figure, the vehicle has a forward speed of 33.5 m/s and is slowing at a rate of 3.45 m/s2. What is the magnitude of the net force acting on the vehicle at this time and the force's direction relative to the velocity?
A 4m long wire with thickness 5mm carries a current 0.4 A. A second identical wire of equal length and thickness is parallel and carries 0.6 A in the same direction. The two wires are separated by 12 cm as measured from the outside of the wire.
If the ?rst package travels with constant speed and takes time ΔT = 5.0 days to arrive as measured by the crew member on the space station, what distance does it travel in the frame of reference of the space station? Give your answer in units of l..
A 60-kg student traveling in a car with a constant velocity has a kinetic energy of 1.2 X 104 J. What is the speedometer reading of the car
A 6350 kg space probe moving nose-first toward Jupiter at 105 m/s relative to the Sun fires its rocket engine, ejecting 80.0 kg of exhaust at a speed of 243 m/s relative to the space probe. What is the final velocity of the probe?
A charge of +Q is fixed in space. A second charge of +q was first placed at a distance r1 away from +Q. What is the charge in the potential energy of charge
you make a homemade capacitor out of two flat circular metal plates each of radius 5 cm and hold them a distance of 1
Show that a projectile with mass m can "escape" from the surface of a planet if it is launched vertically upward with a kinetic energy greater than mgRp, where g is the acceleration due to gravity at the planet's surface and Rp is the planet's rad..
A candle with a flame 2.5cm tall is placed 4.3cm from the front of a concave mirror. A virtual image is formed 13cm behind the mirror. Find the radius of curvature of the mirror
An object moving with uniform acceleration has a velocity of 11.0 cm/s in the positive x-direction when its x-coordinate is 2.70 cm. What is its acceleration
Describe two ways that the resonant circuit(s) in a radio are useful in helping to receive the broadcast from a single radio station. I know one of them is Electrical resonance of tuned circuits in radios allow individual stations to be selected.
Ocean waves are traveling to the east at 5.0 m/s with a distance of 16 meter between crests. Find with what frequency do the waves hit front of a boat when the boat is at anchor
a man is on a roof of height 50m and hurls a water balloon with a velocity of 15ms at an angle of 30 above the
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