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3 years ago

What is the only thing that can change

Physics

2 answers:

krok68 [10]3 years ago

8 0

Answer:

Since velocity is a speed and a direction, there are only two ways for you to accelerate

Explanation:

change your speed or change your direction—or change both.

scoray [572]3 years ago

7 0

You can slow down or speed up or change direction

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An ice cube has a volume of 10cm3. The mass of the bar is 9.2 g. What is the density of the ice cube?

kotykmax [81]

Density = mass /volume = 9.2/10 = 0.92 g/cm3. Hope this helps you!

7 0

3 years ago

The magnetic field at 8 cm distance from a long straight wire, carrying is 0.2x10^-5 T. How much is the electric current in the

FrozenT [24]

Answer:

The electric current in the wire is 0.8 A

Explanation:

We solve this problem by applying the formula of the magnetic field generated at a distance by a long and straight conductor wire that carries electric current, as follows:

$B=\frac{2\pi*a }{u*I}$

B= Magnetic field due to a straight and long wire that carries current

u= Free space permeability

I= Electrical current passing through the wire

a = Perpendicular distance from the wire to the point where the magnetic field is located

Magnetic Field Calculation

We cleared (I) of the formula (1):

$I=\frac{2\pi*a*B }{u}$ Formula(2)

$B=0.2*10^{-5} T = 0.2*10^{-5} \frac{weber}{m^{2} }$

a =8cm=0.08m

$u=4*\pi *10^{-7} \frac{Weber}{A*m}$

We replace the known information in the formula (2)

$I=\frac{2\pi*0.08*0.2*10^{-5} }{4\pi *10x^{-7} }$

I=0.8 A

Answer: The electric current in the wire is 0.8 A

4 0

3 years ago

If 2.2 lbs = 1.0 kg, and Megan Progress weighs 130 lbs, what is her weight in newtons? W = N (Round your answer to nearest whole

lord [1]

as it is given that

2.2 lbs = 1 kg

here we know that Megan Progress weighs 130 lbs

so its mass in kg is given as

$m = 130 * \frac{1}{2.2} = 59.1 kg$

now to find the weight in Newton unit we can say

$W = mg$

$W = 59.1* 9.8$

$W = 579 N$

so 130 lbs weighs as 579 N in SI units

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3 years ago

Hedea made a study chart about nuclear energy. Which best describes the error in Hedea’s chart? The nuclei of atoms are split ap

Lerok [7]

Option (d) is correct.Fission and fusion convert nuclear energy to both radiant and thermal energy.

fission is a process in which bigger nucleus breaks into two or more smaller nuclei with the liberation of a large amount of energy.

Fusion is a process in which two small nuclei fuse together to from an intermediate size nucleus with the liberation of tremendous amount of energy

During fission and fusion, energy is released in the form of both light (radiation) and heat.we can then convert that energy into useful form.

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3 years ago

Read 2 more answers

Is the following sentence true or false trace fossils are not fossils of the animals themselves but are impressions of their act

Mekhanik [1.2K]

Answer:

It is false, many fossils have bones and fur (etc) in them

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4 years ago