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Write two or three sentences describing the mass number charge and penetrating ability of alpha particles.
A small airplane needs to reach a speed of 280 km/h to take off. (a). What is the minimum length of a runway in m that can allow the plane to takeoff if it accelerates at the rate of 3.80 m/s2? (b) How much time does the plane take to reach that s..
The focal length of a magnifying glass is 4.5 cm. To magnify an object do you place it at 3.0 cm or at 5.0from the glass? If the near-point is 30 cm, find the magnification for the image at infinity
A vertical scale on a spring balance reads from 0 to 235 N . The scale has a length of 10.5cm from the 0 to 235 N reading. what is the mass of the fish
At sea level, a tire pressure gauge indicates a tire pressure of 25.5 psi. Evaluate the absolute pressure of air inside the tire
A ball is thrown straight up from the ground with an initial velocity of 39.2 m/s; at the same instant, a ball is dropped from the roof of a building 27.7 m high - After how long will the balls be at the same height?
An object with mass 2.5kg is executing simple harmonic motion, attached to a spring with spring constant 330N/m. Calculate the maximum speed attained by the object
A square, 0.67 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. What is the magnitude of the maximum torque
a magnetic dipole is under the influence of two magnetic fields. the angle between the field directions is 60ordm and
Vectors A and B have magnitudes 2.6 and 2.2, respectively, and directions 400 and 800 from positive x, respectively (Vector diagram is mandatory). (a) Find their components (b) Find magnitude C = 0.40 A - 0.60B
the human body normally produces about 2 x 106 red blood cells per second.a. use scientific notation to express how
In 1976, Kitty Hambleton of the United States drove a rocket-enginecar to a maximum speed of 965 km/h. Suppose Kitty started at restand underwent a constant acceleration with a magnitude of 4.0 m/s2.
One mole of oxygen molecules occupies a cubic vessel of side length 10 cm at a temperature of 18 C. Calculate the pressure of the gas on the walls
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