Determining the spring constant problem
A 1000 kg safe is held 2 m above a heavy duty spring when the rope holding it breaks. The safe compresses the spring 50 cm. What is the spring constant?
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A 100 W lightbulb generates 94 W of heat, which is dissipated through a glass bulb that has a radius of 2.8 cm and is 0.9 mm thick. What is the difference in temperature between the inner and outer surfaces of the glass?
You are on an airplane traveling 30° south of due west at 150.0 m/s with respect to the air. The air is moving with a speed 38.0 m/s with respect to the ground due north. What is the heading of the plane with respect to the ground? (Let 0°
A projectile is fired at angle of theta from the horizontal with an initial velocity of Vo. The projectile strikes the ground 5 seconds later at a horizontal distance of 200m. Determine the speed (Vo) with which the projectile was fired, and wha
An electron with speed vo= 2.61×107m/s is traveling parallel to an electric field of magnitude E= 1.03 × 104 N/C . How far will the electron travel before it stops? How much time will elapse before it returns to its starting point?
As mass is added to the mass holder an elogation or stretching of the string itself may occur. How does this affect the results of the experiment?
Find the resultant speed and direction of motion of the combination. (Specify the magnitude of the resultant speed in terms of v.) Find the kinetic energy lost in this inelastic collision.
A point charge of 7.0 x 10-9 C is located at the origin. How much work is required to bring a positive charge of 3.0 x 10-9 C from infinity to the location x = 30.0 cm
You have book A (6 kg) which sits on top of book B (15 kg) which sits on top of a table (30 kg). a. Draw a free body diagram of each book and the table. Clearly label each force that you drew on each object.
Earth is approximately a sphere of radius 6.37 × 106 m. What are (a) its circumference in kilometers, (b) its surface area in square kilometers, and (c) its volume in cubic kilometers
A 10kg hammer strikes a nail at a velocity of 8.1m/s and comes to rest in a time interval of 8.5ms . What is the impulse given to the nail? What is the average force acting on the nail?
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