A 900-g rock is whirled in a horizontal circle at the end of a 1.8-m-long string. If the breaking strength of the string is 110 N , what’s the minimum angle the string can make with the horizontal?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2