4.5 and then your units I forgot that part but the answer is 4.5<span />
Answer:
Explanation:
In a sonometer , expression for speed of wave produced can be given as follows .
v = 
v is velocity , T is tension in wire , m is density per unit length .
Here v is inversely proportional to square root of m . So if m becomes m / 4
velocity changes as follows .
velocity = 
= 
= 2v
velocity becomes two times . Hence to make velocity two times , mass per unit length has to be changed to one fourth value , keeping tension constant .
Answer:
The resistor has a resistance of 10.667 ohms.
Explanation:
By Ohm's Law, voltage (
), in volts, is directly proportional to the current (
), in amperes, and by definition of power (
), in watts, we have the following formula:
(1)
Where
is the resistance, in ohms.
If we know that
and
, then the resistance of the resistor is:


The resistor has a resistance of 10.667 ohms.
Nope.... Weight of object changes due to change in gravity but mass remains constant...
Answer:
50 pounds
Explanation:
A toe board is a 2 inch x 4 inch safety wooden board used when adding roofing to a house. According to my research on the limits for toe boards, I can say that a toe board can withstand a force of at least 50 pounds applied in any downward or outward direction at any point without failure. This has been tested extensively by professionals before sale.
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