A 15 W electric shaver is used for 3 minutes. How much energy does it use?

Answers

Answer 1

Answer: Idk lots of physics but I think it’s 45W

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A circle has a diameter with endpoints of (2, -8) and (6, 4). What is the center of the circle?

Answers

The length of the diameter is (4,12)
The center is (4, -2)

Diameter = √(y2-y1)² + (x2 - x1)²
d = √(4-(-8))² + (6-2)²
d = √12² + 4²
d = √144 + 16
d = √160

In short, Your Answer would be √160 or 12.65

Hope this helps!

Divide and express the result in standard form. 8/7-i

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$i=√(-1)\to i^2=-1\ (i-the\ imaginary\ unit)\n----------------------\n\n(8)/(7-i)\n\nuse\ (a-b)(a+b)=a^2-b^2\n\n(8)/(7-i)\cdot(7+i)/(7+i)=(56+8i)/(7^2-i^2)=(56+8i)/(49-(-1))=(56+8i)/(49+1)=(56+8i)/(50)=(56)/(50)+(8)/(50)i\n\n=\boxed{(28)/(25)+(4)/(25)i}$

assuming the problem is 8/(7-i) you would multiply the fraction by (7+i)/(7+i)
This would then simplify to 8(7+i)/50 which can be simplified down to 4(7+i)/25

David waits by the crosswalk sign on his way to school. The angle outlined on the sign turns through 50 one-degree angles. Find the measure of the angle.

Answers

Answer:

7 $(1)/(5)$ th turns

Step-by-step explanation:

An angle that turn through n one-degrees is said to have an angle measure of n degree. An angle that turns through 1/360 of a circle is called a one degree angle, this is used to measure angles

:. measure of the angle turns through 50 one degree angles

= $(360)/(50)$ = 7 $(1)/(5)$ th turns.

A closed container has 5.04 ⋅ 1023 atoms of a gas. Each atom of the gas weighs 1.67 ⋅ 10–24 grams.Which of the following shows and explains the approximate total mass, in grams, of all the atoms of the gas in the container?

Answers

Answer:

Step-by-step explanation:

Each atom of the gas weighs 1.67 ⋅ 10−24 grams. 6.71 grams, because (5.04 + 1.67) ⋅ (1023⋅ 10−24 ) = 6.71. ... 0.67 grams, because (5.04 + 1.67) ⋅ (1023⋅ 10−24 ) = 6.71 ⋅ 10−1.

a manufacturer can produce 112 shirt per hour. if a work day is 8 hours, how many shirts can be produced in 3.5 days