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3 years ago

A ball rolls at a speed of 6cm/s how far does the ball roll in 40 seconds ? ____cm

Physics

1 answer:

konstantin123 [22]3 years ago

6 0

240 cm you do 6x 40 and should get 240cm

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Which statement describes the relationship between gravitational force and strong nuclear force? (2 points) Select one: a. Stron

Tamiku [17]

Answer:

b. Gravity is the weaker force; it is related to mass.

Explanation:

Gravity is the force of gravitational attraction of earth on all objects near its surface

This force on all objects depends on the mass of the objects

This force is given by

$F = \frac{GMm}{r^2}$

$F = mg$

so here it is a weak force as it depends on mass and acceleration due to gravity while strong nuclear force is independent of mass and it only depends on the distance between the nuclei.

So as we will change the distance between the nuclei the force between them will change

So here correct answer is

b. Gravity is the weaker force; it is related to mass.

6 0

3 years ago

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An electric flux of 147 N*m^2/C passes through a flat horizontal surface that has an area of 0.824 m^2. The flux is due to a uni

Tresset [83]

Answer:231.16 N/C

Explanation:

Given

Electric Flux $=147 N-m^2/C$

Area(A) $=0.824 m^2$

Given Field point above $31.6 ^{\circ}$

Therefore angle between Area vector Electric Field =90-31.6= $58.4^{\circ}$

We know that Flux is given by

$\phi =\vec{E}\cdot \vec{A}$

$\phi =EAcos\theta$

$147=E\times 0.824\times cos(58.4)$

E=231.16 N/C

4 0

3 years ago

How many molecules are indicated by writing 2 H2O? A.) 2 B.) 3 C.) 4 D.) 1

Thepotemich [5.8K]

A, 2 molcules
H2O is one molecule, it has 3 atoms (two hydrogen and one oxygen)
2 H2O are two water molecules

7 0

3 years ago

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Scientists classify rocks by

Mashcka [7]

Composition and texture

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3 years ago

In Europe, gas cost approximately €0.98 per liter. How many dollars($) per gallon is this? using a factor method

bixtya [17]

Answer:

€0.98 per liter = 4.377 doller per gallon

Explanation:

It is given that, In Europe, gas cost approximately €0.98 per liter. We need to convert it into dollars($) per gallon.

We know that, 1 euro = 1.18 United States Dollar

1 litre = 0.264172 US gallon

Cost of gas in Europe is €0.98 per liter.

$0.98\ \text{euro/ liter}=\dfrac{0.98\times 1.18\ \text{doller}}{0.264172\ \text{gallon}}\\\\=4.377\ \text{doller/gallon}$

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3 years ago