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The half-life of a radioactive sample containing 3.60 x 1012 atoms is 12.6 minute. Find how many atoms of the sample remain after 26 minutes?
A car is driving directly north on the freeway at a speed of 117 km/h and a truck is leaving the freeway driving 76 km/h in a direction that is 40° west of north. What is the velocity of the truck relative to the car?
If the electric field has a magnitude of 450 and the magnetic field has a magnitude of 0.19 , illustrate what speed must the particles have to pass through the selector undeflected?
a body of 2kg is suspended from the ceiling of an elecator moving up with an accelration g. find the apparant weight of
You hang different masses M from the lower end of a vertical spring and measure the period T for each value of M. What is the mass of the spring
What is the order of magnitude of the maximum displacement of a Cu atom at the Debye temperature? Campare this displacement with the interatomic distance.
A 53.0 kg cheerleader uses an oil-filled hydraulic lift to hold four 130 kg football players at a height of 1.30m. what is the diameter of the football players' piston
Provides the option of exploring the raydiagram that applies to this problem. The distance between anobject and its image formed by a diverging lens is 8.30 cm. Thefocal length of the lens is -3.70 cm. Find (a) theimage distance and (b) the object di..
A 0.40 kgball, attached to the end of a horizontal cord, is rotated in acircle of radius 1.5 m on a frictionless horizontal surface. what is themaximum speed the ball can have
A car with a mass of 950kg is travelling east when it collides with a truck of mass 1900kg that is travelling south. What is the speed of the truck before the collision
a point is moving on the perimeter of a circle of radius 1 at the rate of 0.1 radians per second. how fast is its x
Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 237.5m/s, Find the distance between the tanks when the round was first fired
The frequency and wavelength of a transverse wave on a string are 340 Hz and 0.70 m, respectively. What is the linear density of the string
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