A helium balloon rises because of Archimedes' principle
Indicate whether the statement is true or false
T
Physics & Space Science
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Who first accurately measured the value for the charge of the electron?
Physics & Space Science
A 20-? resistor and a 30-? resistor are wired in parallel and connected to a 9.0-V battery
a. How much current is drawn from the battery? b. How much power is dissipated in the circuit?
Physics & Space Science
A compact object with a mass of 4 solar masses must be a black hole
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
A boy kicks a football from ground level with a certain initial velocity at an angle 30.0° above the horizontal. In 2.00 seconds the ball completes its trajectory and hits the ground. What is the initial velocity of the ball?
A) 9.80 m/s B) 4.90 m/s C) 39.2 m/s D) 19.6 m/s E) 78.4 m/s
Physics & Space Science