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A 500-g aluminum container holds 300 g of water. The water and aluminum are initially at 40°C. A 200-g iron block at 0°C is added to the water. Assume the specific heat of iron is 450 J/kg⋅°C, the specific heat of water 4180 J/kg⋅°C and the specific heat of aluminum is 900 J/kg⋅°C.
Determine the change in thermal energy of the iron.
Express your answer to two significant figures and include the appropriate units.
An astronaut lands on an earth-like planets and drops a small lead with a mass of 76.5 g from the top of the spaceship. the point of release is 18 m above the surface of the planet and the ball takes 2.5 s to reach the ground. the astronaut's mass..
Fraunhofar double slit diffraction pattern is observed onthe focal plane of a lens of focal length 0.5m;wavelength ofincident light used is 500nm; Find the distance between their centres
The magnetic flux through a coil of wire containing two loops changes from -34 Wb to +20 Wb in 0.30 s . What is the emf induced in the coil? Express your answer using two significant figures.
What is the acceleration of the insect during the time of the jump (before it leaves the ground)?
The left ventricle of the heart accelerates blood from rest to avelocity of +24cm/s. If the displacement of the blood during the acceleration is +1.6 cm, determine its acceleration (incm/s2).
A person hears a siren as a fire truck approaches and passes by. The frequency varies from 476Hz on approach to 404Hz going away. What is the speed of the truck if the speed of sound in air is 343m/s?
A meter stick is rotated about the end labelled 0.00 cm, therefore that the other end of the stick moves during an arc length of 8.66cm. Through what arc length s does the 25.0-cm mark on the stick move?
A car (m = 1,400 kg) is traveling at an initial speed of 19 m/s. It then slows to a stop over a distance of 70 m due to a force from the brakes. How much work is done on the car
Calculate the kinetic energy a proton gains if it is accelerated, throug a potential difference of 1.00 V
A series RLC circuit with R = 43 Ohms , L = 270 mH , Find the maximum frequency of the frequency range over which the peak current will exceed half its value at resonance
A series RLC circuit has a 140 kHz resonance frequency. What is the resonance frequency if the resistor value is doubled
consider an electron in the ground state of the hydrogen atom separated from the proton by a distance of 0.0529 nm.a
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