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Temka [501]
3 years ago
10

What is the difference between a frequency polygon and an​ ogive? Choose the correct answer below.

Physics
1 answer:
larisa86 [58]3 years ago
6 0
The difference between the two is that frequency polygon is a graph that presents the information by using lines that connect points plotted for the frequencies at the midpoints of the classes. The frequencies are signified by the heights of the points while the the ogive is a graph that signifies the cumulative frequencies for the classes in a frequency distribution.
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True or false describing a metal as malleable means that it can be pounded into a new shape
vampirchik [111]
The answer is True.

Dictionary definition of <span>malleable. 
</span>
(of a metal or other material) able to be hammered or pressed permanently out of shape without breaking or cracking. 
3 0
3 years ago
How many times should the power develop by the engine of a ship increases to double is velocity i the resistance of the water to
Setler79 [48]

Answer:

If the ship speed is doubled, then the power developed is 8 times the initial value.

Explanation:

ship power is roughly proportional to the cube of the speed, so

P ∝ v³

If the speed is doubled, then the power developed becomes

P  ∝ (2)³ = 8 times

Therefore, if the ship speed is doubled, then the power developed is 8 times the initial value.

4 0
3 years ago
One person can hold mutiple types of authority at a time<br><br><br> T/F
Anit [1.1K]
True,i might be wrong.
4 0
3 years ago
Which device provides electrical energy to run an electric circuit
REY [17]

The correct answer is

C. The battery

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8 0
3 years ago
Read 2 more answers
An electron moving in a direction perpendicular to a uniform magnetic field at a speed of 1.6 107 m/s undergoes an acceleration
umka2103 [35]

Answer:

B = 0.024T positive z-direction

Explanation:

In this case you consider that the direction of the motion of the electron, and the direction of the magnetic field are perpendicular.

The magnitude of the magnetic force exerted on the electron is given by the following formula:

F=qvB     (1)

q: charge of the electron = 1.6*10^-19 C

v: speed of the electron = 1.6*10^7 m/s

B: magnitude of the magnetic field = ?

By the Newton second law you also have that the magnetic force is equal to:

F=qvB=ma       (2)

m: mass of the electron = 9.1*10^-31 kg

a: acceleration of the electron = 7.0*10^16 m/s^2

You solve for B from the equation (2):

B=\frac{ma}{qv}\\\\B=\frac{(9.1*10^{-31}kg)(7.0*10^{16}m/s^2)}{(1.6*10^{-19}C)(1.6*10^7m/s)}\\\\B=0.024T

The direction of the magnetic field is found by using the right hand rule.

The electron moves upward (+^j). To obtain a magnetic forces points to the positive x-direction (+^i), the direction of the magnetic field has to be to the positive z-direction (^k). In fact, you have:

-^j X ^i = ^k

Where the minus sign of the ^j is because of the negative charge of the electron.

Then, the magnitude of the magnetic field is 0.024T and its direction is in the positive z-direction

8 0
3 years ago
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