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Ierofanga [76]
3 years ago
13

This list shows the heights in feet of the 30 tallest mountains in the United States. 14,269 14,361 14,470 14,831 16,237 14,270

14,370 14,494 14,950 16,390 14,286 14,410 14,500 15,300 16,500 14,294 14,420 14,530 15,638 17,400 14,309 14,421 14,573 15,885 18,008 14,345 14,433 14,730 15,979 20,320 Jennifer is making a frequency table for the mountain heights. She has created 7 intervals of 1000 feet as shown below. U.S. Mountains Height (ft) Tally Frequency 14,000 - 14,999 15,000 - 15,999 16,000 - 16,999 17,000 - 17,999 18,000 - 18,999 19,000 - 19,999 20,000 - 20,999 What are the frequencies for each interval? a. Frequency. 20, 4, 3, 1, 1, 0, 1. c. Frequency: 20, 3, 4, 1, 0, 1, 1. b. Frequency. 19, 5, 3, 1, 1, 0, 1. d. Frequency: 19, 5, 3, 1, 0, 1, 1. Please select the best answer from the choices provided A B C d

Physics
1 answer:
antoniya [11.8K]3 years ago
8 0

Answer: a. Frequency. 20, 4, 3, 1, 1, 0, 1

Explanation:

Interval(Height in feet) - - - - - - - - frequency

14000 - 14999 - - - - - - - - - - - - - - - 20

15000 - 15999 - - - - - - - - - - - - - - - 4

16000 - 16999 - - - - - - - - - - - - - - - 3

17000 - 17999 - - - - - - - - - - - - - - - 1

18000 - 18999 - - - - - - - - - - - - - - - 1

19000 - 19999 - - - - - - - - - - - - - - - 0

20000 - 20999 - - - - - - - - - - - - - - 1

Frequency : (20, 4, 3 1, 1, 0, 1)

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A venturi meter is a device for measuring the speed of a fluid within a pipe. The drawing shows a gas flowing at a speed v2 thro
yarga [219]

Answer:

V_2=6.17\ m/s

Q=0.49\ m^3/s

Explanation:

Given that

A_1=0.03m^2

A_2=0.08m^2

We know that from continuity equation

Q=A_1V_1=A_2V_2

So

A_1V_1=A_2V_2

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V_1=2.66V_2

Now from energy equation

P_1+\dfrac{1}{2}\rho V_1^2=P_2+\dfrac{1}{2}\rho V_2^2

P_2-P_1=\dfrac{1}{2}\rho V_1^2-\dfrac{1}{2}\rho V_2^2

140=\dfrac{1}{2}\times 1.2\times 7.11\times V_2^2-\dfrac{1}{2}\times 1.2\times V_2^2

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Q=A_2V_2

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7 0
3 years ago
There are Z protons in the nucleus of an atom, where Z is the atomic number of the element. An α particle carries a charge of +2
qaws [65]

Answer:

r = 2.84 \times 10^{-14} m

Explanation:

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So here we can write it as

\frac{1}{2}mv^2 = \frac{k(2e)(ze)}{r}

now we know that

m = 1.67 \times 10^{-27} kg

e = 1.6 \times 10^{-19} C

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here kinetic energy of the incident alpha particle is given as

KE = 6.4 \times 10^{-13} J

now we have

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7 0
3 years ago
Which best describes longitudinal waves?
RUDIKE [14]
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3 0
3 years ago
Holding force constant, what will be the effect of increasing the Moment arm?
Murljashka [212]

Answer:

(b) Torque will increase.

Explanation:

Torque is given as the product of force and moment arm (radius).

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F = τ / r

where;

F is force

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r is radius (moment arm)

Keeping force constant, we will have the following;

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When the moment arm is increased to 4 m

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Therefore, at a constant force, increasing in the Moment arm, will cause increase in torque.

Coorect option is "(b) Torque will increase."

5 0
3 years ago
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