A sample contains 16.75 g of of the radioisotope U-236 and 50.25 g of its daughter isotope, Th-232. how long did it take for decay to take place of one half-life of U-236 Is 23 million years?

How is a magnetic field generated? a. gravity b. moving electric charges c. charged particles that do not move d. an isolated magnetic pole?

Two blocks are in contact on a horizontal frictionless surface. A 60N constant horizontal force is applied to A. The mass of A is 3.0 kg and the mass of B is 15kg. What is the magnitiure of the force of A on B?

Water in a container is originally at 100 kPa. The water is subjected to a pressure of 120 MPa. Determine the percentage decrease in its volume.

How much work does it take to lift an object weighing 200N to a distance of 20 meters

Which phenomenon would cease to exist in the absence of this axial tilt?

Given the two sets, which statement is true? A = {1, 2} B = {1, 2, 3, 4}

The net force acting on an insect falling downward at constant velocity is

Which statement best compares the accelerations of two objects in free fall? O The heavier object has a greater acceleration.

A series RCL circuit includes a resistance of 280, an inductive reactance of 508, and a capacitive reactance of 315. The current in the circuit is 0.312 A.

A ray in benzene has a critical angle of 41.8 deg when trying to enter air. What is the index of refraction for benzene?