Fill in the blanks to the statement below in the next three questions: a train composed of a small engine car and a massive cargo car are connected as they move along a track. the speed of the small engine car is the speed of the massive cargo car. the magnitude of the acceleration of the small engine car is the magnitude of the acceleration of the massive cargo car because .

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

A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?

2. which of the following devices is associated with the reception of radio signals? o a. demodulator o b. transmitting antenna o c. oscillator o d. microphone