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JudyAn atomic clock is the most accurate timekeeping device as it uses vibrations of atoms to keep time, with an accuracy of one second in millions of years. GPS satellites also provide highly accurate time signals that can be used for precise timekeeping. For everyday use, a quartz analog clock is widely used and reliable for keeping time accurately.
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Is the weights on a grandfather clock provide the energy to power the clock?
Yes, the weights on a grandfather clock provide the energy needed to power the clock. As the weights descend under gravity, they drive the clock's mechanism, which regulates the movement of the hands and other components. Regular winding of the weights ensures continuous operation of the clock.
What is time dilation?
Time dilation is a phenomenon of time appearing to pass at different rates depending on the speed of an object or its proximity to a gravitational mass. It is a prediction of the theory of relativity, where time can appear to slow down or speed up based on these conditions. This concept has been confirmed through various experiments involving high-speed particles and precise atomic clocks.
Is velocity the slope of the displacement vs time graph true or false?
True. Velocity is the rate of change of displacement with respect to time, which is represented by the slope of the displacement versus time graph.
Which statements below are true speed increases as time decreases for the same distance?
None of the statements are true. Speed is distance divided by time, therefore, as time decreases and distance remains constant, speed increases.
Is Velocity is the product of a force and the time during which the force acts true or false?
False. Velocity is the result of applying force to an object over time, but it is not calculated by simply multiplying force and time. Velocity is the rate of change of an object's position with respect to time.
