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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?
An object is in front of a converging lens (f = 0.370 m). The magnification of the lens is m = 3.60. Through what distance should the object be moved
A rigid tank contains 1.20 moles of an ideal gas. Determine the number of moles of gas that must be with Illustrate from the tank to lower the pressure of the gas from 24.2 atm to 5.30 atm. suppose the volume of the tank and the temperature of the..
Children are playing on a vertical slide that is 10m high. If humps were added to this slide, but the height remained constant, how would this effect the final speed
When you hit a baseball with a bat, the bat flexes and then vibrates. We can model this vibration as a transverse standing wave. Estimate the approximate distance of the sweet spot (as a fraction of the bat's length L ) from the end of the bat
an elevator can have a maximum mass 1000kg in it and the elevator has a mass of 2000kg. if the elevator can accelerate
A stone is dropped from the top of a cliff. The splash it makes when striking the water below is heard 3.6s later. How high is the cliff
Suppose that the hail comes straight down at a mass rate of m/?t = 0.030 kg/s and an initial velocity of v0 = -10 m/s, calculated the force exerted by the hail on the roof
A ship sets out to sail to a point 141km due north. An unexpected storm blows the ship to a point 138 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive an..
the plates of a parallel plate capacitor have an area of 90 cm2 each and are separated by 2.5 mm. the capacitor is
A cubical box 22cm on a side is constructed from 1.5cm -thick concrete panels. A 100 W lightbulb is sealed inside the box. What is the air temperature inside the box when the light is on if the surrounding air temperature is 20C ?
Pendulum. A small rock with mass 0.22 kg is fastened to a massless string with length 0.70 m to form a pendulum. The pendulum is swinging so as to make a maximum angle of 45° with the vertical. A
a platinum sphere with radius 0.0109 m is totally immersed in mercury. find the weight of the sphere the bouyant force
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