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A speedboat heads west at 112 km/h for 17.0 min. It then travels at 69.0° south of west at 89.0 km/h for 8.0 min. (a) What is the average speed for the trip? (b) What is the average velocity for the trip? (magnitude and direction)
A 5.40 kg mass attached to a spring oscillates with a period of 0.445 s and an amplitude of 17.0 cm. Find the total mechanical energy of the system
A 55-cm-long wire with a mass of 10.6 g is under a tension of 53.0 N. Both ends of the wire are held rigidly while it is plucked. What is the frequency of the third harmonic
Two trees have perfectly straight trunks and are both growing perpendicular to the flat horizontal ground beneath them. What is the magnitude of the squirrel's displacement
a basball pitcher pitches with a horizontal velocity of 80mph(36m/s) the horizonatal distance from the point of release to home plate is 59ft. what is the intantous linear velocity of the sweet spot at the instant of ball contact
Ball bearings are made by letting spherical drops of molten metal fall inside a tall tower -- called a shot tower -- and solidify as they fall. If a bearing needs 3.1 s to solidify enough for impact, how high must the tower be
A 5.0V potential difference is applied between the ends of a 0.80mm -diameter, 90cm -long nichrome wire, What is the current in the wire
A 1.5 solid sphere (radius = 0.20 ) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.50 high and 5.7 long. what is its rotational kinetic energy
Find out the resulting values of the processional rate
The Bohr model of an atom assumes that electrons orbit the nucleus, in a manner similar to how planets orbit a sun. What is the orbital period of the electron
An object of mass 2 kg is moving on a spring with a frequency of 120 Hz and an amplitude of 1.5 m. What is the objects maximum velocity
Suppose after charging a 2.5 µF capacitor to 9 V, you connect it to the second uncharged capacitor of 14 µF. What voltage will your voltmeter read across the second capacitor
The resistance of a copper wire of length L meter is 0.1 ohms. If the diameter of the wire is 0.045cm, find out its specific resistance.
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