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Problem: A cookie jar is up a 40o incline. At a point 55 cm from the bottom of the incline the jar has speed of 1.4 m/s. The coefficient of the kinetic friction is 0.15.
Part A: How much farther up the incline will the jar move?
Show how you get the answer, so that I can better understand how to do it.
Assume the Earth's orbit around the sun is a circle and has radius 1.50 x 108 km. This is a rough approximation of the Earth's true elliptical orbit. What is the magnitude of the orbital velocity of the Earth
Three resistors having resistances of 330?, 100? and 220? are connected in parallel. What is the equivalent resistance? ____________________. When the combination is connected across a battery, the current in the 100? resistor is 0.12A.
Ball 1, with a mass of 130g and traveling at 14m/s, collides head on with ball 2, What are the final velocities of each ball if the collision is perfectly elastic
A 2.00 meter long, straight rod is 1.00 mm in diameter an is made of pure copper (specific gravity 8.93). What is the potential difference between the ends on the wire
Light enters a liquid (from air) at an angle of 31° with respect to the normal and is refracted into the liquid at an angle of 28° with respect to the normal. Determine the index of refraction of the liquid
A 120 V potential difference is applied to a space heater whoseresistance is 12 Ω when hot. (a) At what rateis electrical energy transferred to thermal energy?(b) What is the cost in cents for 6.0 h at US5.0¢/kW·h?
Compute the semi major axis of the star orbit
A radioactive isotope has an activity of 8.44 mCi. After 4.00 hours the activity is 5.40 mCi. What is the half-life of the isotope
Two particles oscillate in simple harmonic motion with amplitude A, about the centre of a common straight line of length 2A. How far apart are the particles from each other
An explosion breaks an object originally at rest into two fragments. One fragment acquires twice the kinetic energy of the other. What is the ratio of their masses
If I eat 500g of something which is 700Bq/kg, with a half life (biological and physical) of 55 days, what is the dose and effective dose on someone who is 70kg.
Two persons are carrying a uniform wooden board that is 3.00 meter long and weighs 160 Newton. determine at what point does the other person lift
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