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Two lamps marked 60-watts, 120 volts and 40-watts, 120 volts are connected in series across a 120-volt line. What is the power consumption in each lamp? Assume that resistance does not vary with current.
Consider an infant who weighs 100 newtons. During each year she grows so that each dimension of her body increases by 5%. How much would she weigh then.
a random sample of 49 selected from a population with a standard deviation of 14 yielded a mean 125. the mean and the
Travelling at the speed of 14.10 m/s, driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of automobile after 1.130 s have elapsed..
A 0.0290 kg bullet moving horizontally at 400 m/s embeds itself into an initially stationary 0.500 kg block. How far does this combination travel before stopping
A 15g rifle bullet traveling 220 m/s buries itself in a 3.5 kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. Determine the horizontal component of the pendulum's displacement.
A downward force of 60 N is exerted on the top of the book by a hand pushing down on the book. What is the gravitational force acting on the book
A diving board length = 5.40 that weighs 230 is supported by two pillars. One pillar is at the left end of diving board; the other is distance = 1.60 away. Determine the magnitude of the force exerted by the left pillar while a 90.0 diver stands a..
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
A chain consisting of five links, each of mass 0.200 kg, is lifted vertically with a constant acceleration of a = 2.7 m/s2. Find out the magnitude of the force that link 3 exerts on link 2.
An air bubble has a volume of 1.65 cm3 when it is released by a submarine 115 m below the surface of a lake. What is the volume of the bubble
We have a small Estes rocket at home that we have taken to a field to launch vertically upward. What is the maximum height of the rocket
The middle C string on a piano is under a tension of 911 N. The period and wavelength of a wave on this string are 3.82 ms, Find the linear density of the string
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