The power is calculated using the following rule:
Power = voltage * current
We are given that:
power = 10 watts
voltage = 3 volts
Substitute with the givens in the above equation to get the value of the current as follows:
P = V*I
10 = 3*I
current (I) = 10/3 amperes
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Answer:
d. observing sunspots on the Sun and mountains on the Moon
Explanation:
Galileo was an Italian Physicist and Astronomer and is regarded as the father of modern Physics.
It was previously believed that the objects in the heavens such as the sun, moon and stars were perfect and rough till he observed sunspots on the sun and mountains on the moon which indicates the surface of the moon is rough with mountains and craters.
C = 5/9 (F-32)Part 1. C=5F/9-(5/9)325F/9=C+160/9F=(9/5)C+(9/5)(160/9)F=(9/5)C+32for part 2:
F=(9/5)20+32F=36+32=68 degrees Fahrenheit
Answer: 204.29 *10^-6 J
Explanation: In order to explain this question we have to consider to following expression for the potencial and electric field in a capacitor, which is given by;
E*d=V where d is the separation between plates and E and V are the electric field and the voltage difference in the plates.
For the maximun electric field, V max es equal
Vmax=Emax*d= 222*10^3 *1.96*10^-3=435.12 V
We also know that potential energy stores by a capacitor with a constant dielectric κ is given by:
E=0.5*C*V^2, where C is the capacity and V the voltage.
For two plates capacitor C is equalk to:
C= k*ε*A/d where A and d are the area and the separation in the capacitor. εo is a constant equal 8.85*10^-12 F/m
Then;
E=[(0.5*5.85*8.85*10^-12*0.0817)/(1.96*10^-3)]*(435.12)^2= 204.29 *10^-6 J
