A point charge Q = 7.00 × 10-9 C is placed at the origin of an xy-coordinate system. What is the electric field intensity E at a distance of x = 30 cm from this charge? (Use k = 9 × 109 Nm2/C2.)
A) 100 N/C
B) 400 N/C
C) 500 N/C
D) 600 N/C
E) 700 N/C
E
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Two inclined planes A and B have the same height but different angles of inclination with the horizontal. Inclided plane A has a steeper angle of inclination than inclined plane B
An object is released at rest from the top of each of the inclined planes. How does the speed of the object at the bottom of inclined plane A compare with that of the speed at the bottom of inclined plane B? A) The speed of the object at the base of inclined plane A would be grater than the speed of the object at the base on inclined plane B. B) The speed of the object at the base of inclined plane B would be grater than the speed of the object at the base on inclined plane A. C) The speed of the object is the same for both inclined planes. D) There is not enough information to answer the question.
What is the order of star colors with increasing temperature?
a. Red, Yellow, Blue b. Blue, Red, Yellow c. Red, Blue, Yellow d. Yellow, Red, Blue e. Blue, Yellow, Red
A ________ lens is used to compensate for hyperopia
Fill in the blank(s) with correct word
Is it possible for heat to travel from a cold object to a hotter object?
What will be an ideal response?