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2 years ago

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1. A meteorologist describes a tropical storm as traveling northwest at 50 mi/h. Which attribute of the storm's motion has the m

eteorologist described? A. force C. velocity B. acceleration D. displacement

1 answer:

kirza4 [7]2 years ago

6 0

The answer is B. Acceleration.

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Select the correct answer from each drop-down menu.

bagirrra123 [75]

Answer:

(1) An object that’s negatively charged has more electrons than protons.

(2) An object that’s positively charged has fewer electrons than protons.

(3) An object that’s not charged has the same number of electrons than protons.

Explanation :

Objects have three subatomic particles that are Electrons, protons, and neutrons.

Protons and neutrons are found in the nucleus and electrons rotate or move outside the nucleus. Naturally, protons are positively charged, neutrons have no charge, and electrons are negatively charged.

Therefore, an object that is negatively charged has more electrons than protons. An object that is not charged has the same number of electrons than protons. An object that is positively charged has fewer electrons than protons.

8 0

2 years ago

The mass of a star is 1.210×1031 kg and it performs one rotation in 20.30 days. Find its new period (in days) if the diameter su

balandron [24]

The new period will be 2.486 days.

<h3>What is the period?</h3>

The period is found as the ratio of the angular displacement and the angular velocity. Its unit is the second and is denoted by t. The value of time needed to complete the rotation is the total period.

Given data;

Mass of a star,m= 1.210×10³¹ kg

The time period for one rotation of the star, T = 20.30 days

D' = 0.350 D

R' = 0.350 R

From the law of conservation of angular momentum;

$\rm I \omega = I' \omega' \\\\ \frac{2}{5} MR^2 \times \frac{2 \pi }{T}=\frac{2}{5} MR'^2 \\\\ R^2 \times \frac{1}{T}= R'^2 \times \frac{1}{T} \\\\ T' = \frac{R'^2T}{R^2} \\\\ T' = \frac{(0.350 R)^2 \times 26.1 }{R^2} \\\\T' = 0.1225 \times 20.30 \\\\ T'= 2.486 \ days$

Hence, the new period will be 2.486 days.

To learn more about the period, refer to the link;

brainly.com/question/569003

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8 0

1 year ago

Which of these terms refers to rock material that has been weathered physically, chemically, and biologically?

velikii [3]

Physically, because of environmental factors such as air, and water. Create corrosion which in turn erode the rock.

6 0

2 years ago

If the current in each wire is the same, which wire produces the strongest magnetic field?

sveta [45]

Answer:

C

Explanation:

I did this before

8 0

2 years ago

Read 2 more answers

Two appliances are connected in parallel to a 120-v battery and draw currents i1 = 3.0 a and i2 = 3.1

8090 [49]

Initially they are connected in parallel, so they have the same voltage V=120 V at their ends. Therefore we can use Ohm's law to calculate the resistance of each appliance:
$R_1 = \frac{V}{I_1}= \frac{120 V}{3.0 A}=40 \Omega$
$R_2 = \frac{V}{I_2}= \frac{120 V}{3.1 A}=38.7 \Omega$

When they are connected in series, they are crossed by the same current I. The equivalent resistance of the circuit in this case is $R_{eq}=R_1+R_2 = 78.7 \Omega$ , so we can use Ohm's law for the entire circuit to find the current in the circuit:
$I= \frac{V}{R_{eq}}= \frac{120 V}{78.7 \Omega}=1.52 A$

4 0

2 years ago