A narrow coil of 10 turns and area 4×〖10〗^(-2) m^2 is placed in a uniform magnetic field of flux density B of 〖10〗^(-2) T, so that the flux links the turns normally. If the coil is rotated about an axis through its middle so that it turns through 60° in 0.2 seconds, calculate the average induced emf.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?