A 25-kg wooden sign 3.0-m long by 2.2-m high is supported by two nails along its left edge, one at the bottom of the sign and the other at the top. The nails are on the same vertical line
Find the horizontal component of the force exerted by the upper nail. A)
250 N
B)
120 N
C)
360 N
D)
170 N
E)
280 N
D
You might also like to view...
A star begins fusing hydrogen to helium the moment it leaves the main sequence
a. True b. False Indicate whether the statement is true or false
Both sound waves and electromagnetic radiation:
A) travel at the speed of light. B) require a medium to move through space. C) can move through space without a medium. D) transfer energy. E) are transverse waves.
A coil with a self-inductance of 0.75 mH experiences a constant current buildup from zero to 15 A in 0.25 s. What is the induced emf during this interval?
a. 0.045 V c. 0.030 V b. 0.47 V d. 0.019 V
A resistor R is connected across a battery of negligible internal resistance. If the resistance of R is cut in half, the power dissipated in R will ________ (indicate change, if any).
Fill in the blank(s) with the appropriate word(s).