Predict/Calculate A pendulum consists of a large weight suspended by a steel wire that is 0.9500 m long. (a) If the temperature increases, does the period of the pendulum increase, decrease, or stay the same? Explain. (b) Calculate the change in length of the pendulum if the temperature increase is 150.0C°. (c) Calculate the period of the pendulum before and after the temperature increase. (Assume that the coefficient of linear expansion for the wire is 12.00 × 10 −6 K −1 , and that g = 9.810 m/s 2 at the location of the pendulum.)
Predict/Calculate A pendulum consists of a large weight suspended by a steel wire that is 0.9500 m long. (a) If the temperature increases, does the period of the pendulum increase, decrease, or stay the same? Explain. (b) Calculate the change in length of the pendulum if the temperature increase is 150.0C°. (c) Calculate the period of the pendulum before and after the temperature increase. (Assume that the coefficient of linear expansion for the wire is 12.00 × 10 −6 K −1 , and that g = 9.810 m/s 2 at the location of the pendulum.)
Predict/Calculate A pendulum consists of a large weight suspended by a steel wire that is 0.9500 m long. (a) If the temperature increases, does the period of the pendulum increase, decrease, or stay the same? Explain. (b) Calculate the change in length of the pendulum if the temperature increase is 150.0C°. (c) Calculate the period of the pendulum before and after the temperature increase. (Assume that the coefficient of linear expansion for the wire is 12.00 × 10−6 K−1, and that g = 9.810 m/s2 at the location of the pendulum.)
A 0.850-m-long metal bar is pulled to the right at a steady 5.0 m/s perpendicular to a uniform, 0.650-T magnetic field. The bar rides on parallel metal rails connected through a 25-Ω, resistor (Figure 1), so the apparatus makes a complete circuit. Ignore the resistance of the bar and the rails. Please explain how to find the direction of the induced current.
For each of the actions depicted, determine the direction (right, left, or zero) of the current induced to flow through the resistor in the circuit containing the secondary coil. The coils are wrapped around a plastic core. Immediately after the switch is closed, as shown in the figure, (Figure 1) in which direction does the current flow through the resistor? If the switch is then opened, as shown in the figure, in which direction does the current flow through the resistor? I have the answers to the question, but would like to understand the logic behind the answers. Please show steps.
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.60
cm wide on a screen that is 2.80 m away.
Part A
How wide is the slit?
ΟΙ ΑΣΦ
?
D= 2.7.10-8
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