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Assume the decay constant of radioactive substance C is double the decay constant of radioactive substance D. If substance D has a half-life of 4 hour, determine what is the half-life of substance C?
At the Earth's surface, a projectile is launched straight up at a speed of 10.3 km/s. To what height will it rise
a 14700n car is traveling @ 25m/s. the brakes are applied suddenly, and the car slides to a stop the average braking force between the tires and the road is 6980n. how far will the car slide once the brakes are applied
2.70of capacitor is charged to 500v and a 3.70?f capacitor is charged to 530v .part a these capacitors are then
Krypton is a monatomic ideal gas. Suppose you have 4.0 moles of krypton at 293 K and 1 atm. How much work is involved in this process
In a double-slit arrangement the slits are 1.60 10-5 m apart. If light with wavelength 440 nm passes through the slits, what will be the distance between the m = 4 and m = 8 maxima on a screen 1.00 m away?
What is the energy density. Find out the lowest frequency that permits standing waves in both strings with a node at the junction. The standing wave pattern in each string may have a different number of loops.
An object is initially placed on the optical axis 21.2 cm to the left of a convex lens that has a focal length of 13.7 cm. what is the new image distance
a ball is tossed from an upper-story window of a building. the ball is given an initial velocity of 8.30 ms at an angle
A 190 g block hangs from a spring with spring constant 15 N/m. At t=0s, the block is 13 cm below the equilibrium point and moving upward with a speed of 98.0 cm/s.
A 56 kg student runs at 5.0 m/s, grabs a hanging rope, and swings out over a lake, What is the maximum tension in the rope?
A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is 4.8N. The buoyant force has a magnitude of 6.5N and acts vertically upward. External force acting on the ball maintains it in the state of res..
Santa loses his footing and slides down a frictionless, snowy roof that is tilted at an angle of 30.0â. what is his speed as he leaves the roof
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