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A 0.250 kg ball of Plasticine moving 5.0 m/s overtakes and collides with a 0.3000 kg ball of Plasticine, traveling in the same directiion at 2.0 m/s. The 2 balls of Plasticine stick together pm collison. What is their speed after the collision.
A block of mass 4 kg is compressing a spring with K=2500 N/m a distance of 0.3 m. How much work does the spring do on the block
A 12mm-high object is 10cm from a convex mirror with focal length 17cm. How far is its image from the mirror
A forklift truck is being used to raise a 60 kh crate onto a shelf. The crate contains breakables so it must not slide on the forklift, in case it bangs into the uprights. Determine what kind of friction force is this and Why
suppose that you are traveling on board a spacecraft that ismoving with repect to the earth at a speed if .985c. what is your breathing rate
A mass spectrometer is used to examine the isotopes of uranium. Ions in the beam emerge from the velocity selector at a speed of 3.02 105 m/s and enter a uniform magnetic field of 0.625 T directed perpendicularly to the velocity of the ions.
A grandfather clock has a weight at the bottom of the pendulum that can be moved up or down. If the clock is running slow, what should you do to adjust the time properly?
A student moves a box with mass of 35.0 kilogram up a ramp inclined at 12o with the horizontal. find the acceleration up the ramp
A 5000 ohms resistor and a 50uF capacitor are connected in series at t=0 with a 6V battery. The capacitor is initially uncharged. What is the maximum charge stored on the capacitor
Very small forces can have tremendous effects on the motion of very small objects. From rest, how much time would it take for the electron to reach a speed of 3.0 × 106 m/s
You make 48 pints of pink paint by using 5 pints of red paint for every 3 pints of white paint, use a diagram to find the number of pints of red paint and white paint in your mixture
Needing help, secretary of the United States Department of Agriculture asked your teacher, "If a chicken and a half can lay an egg and a half in a day and a half, how many days will it takes three chickens to lay twenty eggs".
A certain radioactive material has an atomic mass of 172 and a half-life of 505 years (take 1 yr = 365.25 d). What is the activity of 0.9 g of this material?
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