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In a common test for cardiac function the patient walks on an inclined treadmill. Find the power required from a 75 kilogram patient when the treadmill is sloping at an angle of 15o and the velocity is 3.3 km/h. (How does this power compare to the power rating of a light bulb?)
A metal bar with a resistance of 30 Ohm is rotated around its center in a magnetic field of strength .5 T which is oriented perpendicularly to the plane of the bar's rotation. what is the electrical power dissipated in the resistor
the potential difference between the accelerating plates of a tv set is about 25 kv. if the distance between the plates
A weather balloon contains 12.0 m3 of hydrogen gas when it is released from a location at which the temperature is 22°C and the pressure is 101 kPa. what is the new volume of the balloon
A gas is compressed at a constant pressure of 0.800 atmfrom 7.00 L to 3.00 L. In the process, 400 J of energy leaves the gas by heat. What is the work done on the gas? What is the change in its internal energy?
Electrons accelerated by a potential dissimilarity of 12.89 V pass during a gas of hydrogen atoms at room temperature. Compute the wavelength of light emitted with the longest possible wavelength
In compressing the spring in a toy dart gun, 0.6 J of work is done. When the gun is fired, the spring gives its potential energy to a dart with a mass of 0.08 kg, What is the dart's speed
Water at 35.0 °C is sprayed onto 0.210 kg of molten gold at 1063 °C (its melting point). The water boils away, forming steam at 100.0 °C and leaving solid gold at 1063 °C. What is the minimum mass of water that should be used?
In a model AC generator, a 497 turn rectangular coil 7.0 cm by 26 cm rotates at 123 rev/min in a uniform magnetic field of 0.61 T. What is the maximum emf induced in the coil
Saturn has an equatorial radius of 6.00 * 10 ^7 m and a massof 5.67 * 10 ^26 kg. Compute the acceleration of gravity at the equator of Saturn
The escape velocity of a bullet from the surface of planet Y is 1727 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.490 times that of Y, and its radius is 0.8790 times the radius of Y (in m/s).
question uncompressed the spring for an automobile suspension is 40cm long. it needs to be fitted into a space 33cm
An airplane is flying through a thundercloud at a height of 2400 m. (Flying at this height is very dangerous because of updrafts, turbulence, and the possibility of electric discharge.)
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