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A piece of radium has an activity of 18 mCi.
(a) What is the mass of the radium?
(b) What is its activity in Bq?
What are the direction and magnitude of the magnetic force the field exerts on the proton.
A neutron having mass of 1.67 X 10^-27 kg and moving at 10^8 m/s collides with a deutron at rest and sticks to it. Given that the mass of neutron is 3.34 X 10^-27 kg.
A 2 kg ball is dropped from a height of 1/5 m. It bounces off the floor with a velocity of 1 m/s. What is the impulse (magnitude and direction) applied to the ball during the collision with the floor
A siren at rest has a frequency f0. Standing at a crosswalk, a student hears a frequency f' from the siren in an approaching police car. find the speed of the car
A transparent oil with index of refraction 1.15 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 415-N walk on the overhanging part of the plank before it just ..
A bowling ball of mass 7.2 kg and a radius of 9.9 cm rolls without slipping down a lane at 2.8m/s. Calculate its total kinetic energy
You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren, At what speed is the ambulance traveling
A movie camera with a (single) lens of focal length 85 mm takes a picture of a person standing 35 m away. what is the height of the image in millimeters on the film
Two automobiles of equal mass approach an intersection. One vehicle is travelling with velocity 13 m/s toward the east and the other is travelling north with speed v2i. Neither driver sees the other.
An object is placed to the left of a convex lens and on the optical axis. What is the magnification of the image formed by the lens
A person whose eyes are 1.7 m above the floor stands in front of a plane mirror. How far above the floor should the bottom edge of the mirror be placed
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