You check a barometer and observe that the air pressure has been dropping all day. Is tonight's weather more likely to be calm or stormy?

Answers

Answer 1

Answer: If you had been checking the barometer and observe that the air pressure has been dropping all day, tonight's weather more likely to be stormy. Stormy weathers have low pressure climate

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What is the formula for calculating density?A. density=mass/volume
B. density=mass*volume
C. density=volume/mass
D. density=mass + volume

Answers

Density can be determined by themass of an object and how much it takes up space (volume). It is represented bythe formula D = M/V where D is the density in kg/m^3 or lb/ft^3, M is the massin kg or lb and V is the volume in m^3 or ft^3. The answer would be A. For example, you are given the mass of anobject of 40.5kg and a volume of 15m^3. Find its density.

D = M/V
D = (40.5 kg)/ (15 m^3)
D = 27/10 or2.7 kg/m^3

Answer:

My answer is A.

Explanation:

by using a density triangle, you would have to cover up the density and then it will show you, m over v. so that means you would have to divide.

Calculate surface tension of an enlarged radius of 4cm to 6cm and amount of work necessary for enlargement was 1.5×10^-4 joules

Answers

Answer:

$T=7.5*10^(-5)$

Explanation:

From the question we are told that:

Radius $r=2cm$

Work done $W=1.5×10^-4 joules$

Generally the equation for Work done is mathematically given by

$W=T.dA$

Therefore

$T=(W)/(dr)$

$T=(1.5*10^(-4))/(2)$

$T=7.5*10^(-5)$

Which of the following correctly describes a solenoid? A) The magnetic field around a solenoid is unipolar.
B) The field around a solenoid is termed a bar magnet.
C) A solenoid is created by winding current carrying wire into a coil.
D) Increasing the current in the wires will reduce the magnetic field outside of the solenoid.

Answers

Answer;

C) A solenoid is created by winding current carrying wire into a coil.

Explanation;

-A solenoid is a coil of insulated or enameled wire wound on a rod-shaped form made of solid iron, solid steel, or powdered iron.

-Solenoids have a wide range of applications, for instance they are used as electromagnets, as inductors in electronic circuits, and as miniature wireless receiving antennas.

Option C describes a solenoid

Nuclear power plants require large volumes of _____ to cool reactors and convert heat to electricity.air
water
salt
uranium

Answers

Nuclear power plants require large volumes of water to cool reactors and convert heat to electricity. Water is a good conductor of thermal energy and is conducive for cooling reactors because it can easily absorb energy without application of anything.

Answer:

Water

Explanation:

If an element forms a 3+ ion in which group of the periodic table would you expect to find it?A. 15
B. 5
C. 13
D. 2

Answers

If an element forms a 3+ ion, one can expect to find it in group 13 of the periodic table (option C).

What is the periodic table?

Periodic table is a tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group (column).

The periodic table is made up of vertical columns called group and horizontal rows called periods.

Elements in group 13 form ions with +3 and +1 charges. The elements are as follows:

boron (B)
aluminum (Al)
gallium (Ga)
indium (In)
thallium (Tl)
nihonium (Nh)

Therefore, group 13 elements in the periodictable form +³ ions.

Learn more about periodic table at: brainly.com/question/11155928

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A cannon is shot from the ground with a speed of 100 m/s at an unknown angle, if itlands after being in the air for 6 s, what was the angle of the launch?