B
9
Use base units to check whether the following equations are balanced:
(a) pressure...
B
9
Use base units to check whether the following equations are balanced:
(a) pressure = depth x density x gravitational field strength,
(b) energy = mass (speed of light.
The thermal energy needed to melt a solid of mass me without any change of
temperature is given by the equation
O-
where L is a constant. Find the base units of L.
10 Determine the base units of the following quantities:
(a) energy (force x distance)
(b) specific heat capacity.
(thermal energy change = mass specific heat capacity * temperature charige)
11 Show that the left-hand side of the equation
pressure. s* density * (speed - - constant
is homogeneous and find the base units of the constant on the right-hand side.
Answers: 1
Physics, 21.06.2019 20:30
Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.
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Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.
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If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
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