Ask question

Ask question

All categories

2 years ago

8

8. Peter and his partner are conducting a physics experiment on pendulum motion. Their 30-cm

1 answer:

katrin2010 [14]2 years ago

8 0

Answer: 90/pi degrees

Step-by-step explanation:

It forms a 15cm arc from a circle of radius 30 cm.

The diameter is 30*2*pi = 60pi cm. So the arc is 15/60pi = 1/4pi of the way around a 360 degree circle. This is 1/4pi * 360 = 90/pi degrees.

Hope that helped,

-sirswagger21

You might be interested in

On frank's bus ride to work, all available seats are filled and 6 passengers are standing in the aisles. if 10 passengers get of

avanturin [10]

<span>Answer: 4 Explanation: Initially 6 people are standing. 10 people get off the bus. The six people who are standing will take their seats and remaining 4 seats will be occupied by four out of the eight people who alight the bus. So now 4 people will be standing on the aisles.</span>

5 0

2 years ago

Read 2 more answers

- In the following diagram of triangle QRS, QR = 8 and QS = 17. Determine the value of sin Q. Show how you

dimaraw [331]

Answer:

$SinQ=\frac{15}{17}$

Step-by-step explanation:

We draw the right triangle as shown in the image attached.

Δ QRS

Where R is the right angle

Given

QR = 8

QS = 17

Now, using Pythagorean Theorem, we can find RS:

$QR^2+RS^2=QS^2\\8^2+RS^2=17^2\\RS^2=17^2-8^2\\RS^2=225\\RS=\sqrt{225}\\RS=15$

Now, we know the ratio Sine as:

$Sin(\theta)=\frac{Opposite}{Hyotenuse}$

Where $\theta$ is the angle (here angle Q)

Opposite side is RS (which is 15)

Hypotenuse is given as QS (which is 17)

So,

$SinQ=\frac{15}{17}$

This is the value of SinQ.

We don't want the angle, so we'll stop here.

5 0

2 years ago

According to a Pew Research Center report from 2012, the average commute time to work in California is 27.5 minutes. To investig

FinnZ [79.3K]

Answer:

b. Identify the variable of interest and state whether it is categorical or quantitative.

Step-by-step explanation:

7 0

2 years ago

Chuck has a gross pay of $815.70. By how much will Chuck’s gross pay be reduced if he has the following items withheld? federal

tangare [24]

Chuck has a gross pay of $815.70. His gross pay will be reduced by:

Federal tax of $56;
Social Security tax that is 6.2% of his gross pay;
Medicare tax that is 1.45% of his gross pay;
State tax that is 19% of his federal tax.

Let's count:

1. gross pay of $815.70 - 100%,

Social Security tax of $x - 6.2%.

Then

$\dfrac{815.70}{x}=\dfrac{100}{6.2} ,\\ \\815.70\cdot 6.2=x\cdot 100,\\ \\x=\dfrac{815.70\cdot 6.2}{100} =50.5734.$

2. gross pay of $815.70 - 100%,

Medicare tax of $y - 1.45%.

Then

$\dfrac{815.70}{y}=\dfrac{100}{1.45} ,\\ \\815.70\cdot 1.45=y\cdot 100,\\ \\y=\dfrac{815.70\cdot 1.45}{100} =11.82765.$

3. Federal tax of $56 - 100%,

State tax $z - 19%.

Then

$\dfrac{56}{z}=\dfrac{100}{19} ,\\ \\56\cdot 19=z\cdot 100,\\ \\z=\dfrac{56\cdot 19}{100} =10.64.$

4. Chuck’s gross pay will be reduced by

$\$56+\$50.5734+\$11.82765+\$10.64=\$129.04105\approx \$129.04.$

3 0

2 years ago

Read 2 more answers

How can victoria justify step 3 of her work

Wittaler [7]

A little more info please?

4 0

2 years ago

Read 2 more answers