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Question:
What is the effect of the following variables on the strength of an electromagnet?
Answer: .By simply wrapping wire that has an electrical current running through it around a nail, you can make an electromagnet. When the electric current moves through a wire, it makes a magnetic field. There is another way that uses electricity to make a temporary magnet, called an electromagnet.
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Answer:
13. 9.77 inches (rounded to 3 s.f.)
14. 249m² (rounded to 3 s.f.)
Step-by-step explanation:
13. To find the arc length, the formula is the angle of the arc out of 360° multiplied by the circumference of the full circle. Circumference of circle: pi × r × 2
× pi × 7 × 2 = 3pi
= 9.77 inches (rounded to 3 s.f.)
14. To find the sector area, the formula is the angle of the sector out of 360° multiplied by the area of the full circle. Area of circle: pi × r × r
× pi × 10 × 10 = 79pi
= 249m² (rounded to 3 s.f.)
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Explanation:</h2><h2>
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Hello! Remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any figure, so I'll assume m∠1 and m∠2 are complementary angles. Angles that add up to 90° are called complementary angles. In this case, we know m∠1 and want to know m∠2. Thus, we can establish the following formula:
m∠1 + m∠2 = 90°
Isolating m∠2:
m∠2 = 90° - m∠1
m∠2 = 90° - 64
m∠2 = 26°
Answer:
Step-by-step explanation:
a) Meal price | Remaining
$15 | $37.75
$21 | $30.85
$24 | $27.40
$30 | $20.50
b) (20.5 - 27.4)/(30-24) = -6.9/6
f(m) = 55 - 1.15m = -1.15m + 55
c) Use a graphing utility