#6). The tangent of an angle in a right triangle is
(opposite side) / (adjacent side) .
The side opposite the marked angle is 4cm.
The side adjacent to the marked angle is 12cm.
The tangent of the marked angle is (4cm / 12cm) = 1/3 .
The marked angle is the angle whose tangent is 1/3 .
You can find that online, or with your calculator, slide rule, Curta, or book.
#7). The cosine of an angle in a right triangle is
(adjacent side) / (hypotenuse) .
The side adjacent to the marked angle is 15m.
The hypotenuse is 19m.
The cosine of the marked angle is (15m / 19m) = about 0.78947...
The marked angle is the angle whose cosine is 0.78947... .
You can find that online, or with your calculator, slide rule, Curta, or book.
Answer:
But once the core runs out of hydrogen, the star starts to contract again briefly, until a shell of hydrogen around the core becomes hot enough to fuse into helium. When this happens, the radiation pushes the outer layers of the star far out into space, turning the star into a red giant
Explanation:
Correct?
Answer:
E.) Circuit Breaker is the correct answer.
Explanation:
Circuit Breaker is an automated electrical device that is designed to control and stop the excessive current flowing if the crosses a particular level and it protects the electrical circuit from the damage that can be caused due to overload of current that is the reason Circuit Breaker is called protective device.
There are different types of circuit breakers such as oil circuit breaker, vacuum circuit breaker, outdoor circuit breaker, Spring operated circuit breaker, Hydraulic circuit breaker and Medium-voltage circuit breaker, etc.
To solve this problem we will apply the concepts related to the induced voltage or electromotive force. Said force is equivalent to the variation of the magnetic flux over time, and in turn, said flux could be expressed in terms of the cross-sectional area and the magnetic field. Under these relationships and our values we will find the finally desired value.
The induced emf is,
We have:
And
Then
Here,
r = The distance from the axis
R = Radius of the solenoid
Rearrange for
Replacing,
Answer:
A. Muscular endurance
Explanation:
Muscular endurance is measured by the amount of time a muscle group can sustain a contraction.