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Describe heat capacity and specific heat capacity of a substance. What are the units for these quantities (SI system)? For a closed system containing a mass m of a substance by specific heat capacity c, what is the change in temperature when Q units of heat energy flow across the system boundary?
new york is roughly 3000 miles from seattle. when it is 800 a.m. in seattle it is 1100 a.m. in new york. using this
The Sun generates most of its light during a series of nuclear reactions called the proton-proton chain. The overall process of these nuclear reactions can be summarized as4 1H → 2He + 2ν + 2γ + 2? Where ν is a small neutral particle called a neutrin..
A conventional mercury thermometer consists of a thin glass capillary filled with mercury. The capillary is enclosed in a protective glass cylinder. These mercury thermometer can be quite sensitive and very precise.
julie throws a ball to her friend sarah. the ball leaves julies hand a distance 1.5 meters above the ground with an
a rock is thrown vertically upward from ground level at time t 0. at t 1.8 s it passes the top of a tall tower and
A paperweight, when weighed in air, has a weight of W = 6.9N.When completely immersed in water, however, it has a weight of Win water = 4.3 N. Find the volume of the paper weight
When an automobile moves with constant speed down a highway, estimate the total frictional force acting on the car
Water flows straight down from an open faucet. The cross-sectional area of the faucet is 1.9 × 10-4m2, find the cross-sectional area of the water stream at a point 0.09 m below the faucet
An electric fan is running on HIGH. After the LOW button ispressed, the angular speed of the fan decreases to 83.8 rad/s in1.75 s. Determine the intial angular speed of the fan
q1. a 1.86- sound wave travels through the pregnant womans abdomen and is reflected from the fetal heart wall of her
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
An ac generator with a frequency of 34.1 Hz and an rms voltage of 12.0 V is connected to a 49.8-µF capacitor. What is the maximum current in this circuit? What is the current in the circuit when the voltage across the capacitor is 5.29 V and increasi..
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