What is heat transfer?

What will be an ideal response?


Heat transfer is rate at which heat or energy flows across a systems boundary.

Physics & Space Science

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Copernicus was the first to propose that Earth moved around the sun

Indicate whether the statement is true or false

Physics & Space Science

A 150 W light bulb is operating on a 120 V rms ac line. What is the rms current in the bulb?

A. 2.50 A B. 1.67 A C. 1.50 A D. 1.25 A E. 0.883 A

Physics & Space Science

The gravitational field at the earth due to the moon is (the mass of the moon is kg and separated by a distance of

A.
B.
C.
D.
E.

Physics & Space Science

The unstable isotope 234Th decays by ? emission with a half-life of 24.5 days

The initial decay rate of the sample was 9.9 × 1013 Bq. (1 u = 1.6605 x 10-27 kg) (a) What mass of 234Th was initially present? (b) What is the decay rate after 68 days?

Physics & Space Science