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GenaCL600 [577]

3 years ago

15

Friction between solids can be most accurately defined as the force that opposes the sliding motion of two _____that are touchin

g each other.

1 answer:

OlgaM077 [116]3 years ago

3 0

Answer:

surfaces

Explanation:

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Bingel [31]

Answer:

<h2>3,2 oky na dekh Lena ek bar</h2><h2>2,5</h2>

7 0

3 years ago

In a type of chemical reaction called thermal decomposition, heat is added to a substance, which then splits apart to form sever

exis [7]

The answer is a. endothermic.
In endothermic reaction, as the name suggests, the reactants require energy absorption to form and complete the chemical reaction to form products.
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Hope this helps.

5 0

3 years ago

Which energy conversion takes place when a solar cell is used to light a street lamp ?

Dahasolnce [82]

Electrical energy into Light energy.

It converts the electrical energy into light energy and hence helps to light a street lamp.

3 0

3 years ago

Read 2 more answers

When a golfer tees off, the head of her golf club which has a mass of 158 g is traveling 48.2 m/s just before it strikes a 46.0

adoni [48]

Answer:

v₂ = 53.23 m/s

Explanation:

Given that,

The mass of a golf club, m₁ = 158 g = 0.158 kg

The initial speed of a golf club, u₁ = 48.2 m/s

The mass of a golf ball, m₂ = 46 g = 0.046 kg

It was at rest, u₂ = 0

Immediately after the collision, the club head continues to travel in the same direction but at a reduced speed of 32.7 m/s, v₁ = 32.7 m/s

We use the conservation of energy to find the speed of the golf ball just after impact as follows :

$m_1u_1+m_2u_2=m_1v_1+m_2v_2\\\\v_2=\dfrac{m_1u_1-m_1v_1}{m_2}\\\\v_2=\dfrac{0.158(48.2)-0.158(32.7)}{0.046}\\\\=53.23\ m/s$

So, the speed of the golf ball just after the impact is equal to 53.23 m/s.

3 0

3 years ago

A cell membrane is 0,0000005 m thick and has an electric potential difference between its surfaces of 0,10 V. What is the electr

Irina-Kira [14]

Answer:

Electric field in the membrane is given as

$E = 2 \times 10^5 V/m$

Explanation:

As we know that electric field in a region is related to its potential difference given by the formula

$E = \frac{\Delta V}{\Delta x}$

here we know that

$\Delta V = 0.10 V$

$\Delta x = 0.0000005 m$

so we have

$E = \frac{0.10}{0.0000005}$

$E = 2 \times 10^5 V/m$

5 0

4 years ago