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Neko [114]
3 years ago
8

Which of the following statements is false? A. Two or more atoms combine chemically to form a molecule. B. Two or more different

substances combine physically to form a mixture. C. Two or more different atoms combine chemically to form an element. D. Two or more elements combine chemically to form a compound.
Physics
1 answer:
SCORPION-xisa [38]3 years ago
7 0
<span>C. Two or more different atoms combine chemically to form an element.</span>
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I don't get this question could someone help out
ratelena [41]

Answer:

that would probably be Rock A is harder than Rock B

Explanation:

Because if Rock A can scratch Rock B then it obviously means that Rock A is harder.

Right?

Hope This Helps You Out♡

8 0
3 years ago
A positive charge of 8.0 × 10-4 C is in an electric field that exerts a force of 3.5 × 10-4 N on it. What is the strength of the
Gennadij [26K]

Answer:

E = 0.437 N/C

Explanation:

Given that,

Charge, q=8\times 10^{-4}\ C

Electric force, F=3.5\times 10^{-4}\ N

Let the strength of the electric field is E. We know that, the electric force is given by :

F = qE

Where

E is the electric field strength

E=\dfrac{F}{q}\\\\E=\dfrac{3.5\times 10^{-4}}{8\times 10^{-4}}\\E=0.437\ N/C

So, the strength of the electric field is equal to 0.437 N/C.

6 0
3 years ago
If the number of particles of a gas is increased, the gas pressure will do what?
Inessa [10]
Gas pressure will also increase then.., if volume is kept constant
5 0
3 years ago
Explain how the force of air resistance depends on an object's speed
nalin [4]
There must be a equal opposite reaction. E=mv2
8 0
3 years ago
Force (N) = 250<br> Mass (kg) = 221<br> Acceleration (m/s^2) = ?
lyudmila [28]

Answer:

The required acceleration is a=1.1 m/s²

Explanation:

Given

  • Force F = 250 N
  • Mass m = 221 kg

To determine

Acceleration a = ?

We know that acceleration is produced when a force is applied to a body.

The acceleration can be determined using the formula

F = ma

where

  • F is the force
  • m is the mass
  • a is the acceleration

now substituting F = 250 , and m = 221 in the formula

F = ma

250 = 221 (a)

switch the equation

221(a) = 250

Divide both sides by 221

\frac{221a}{221}=\frac{250}{221}

simplify

a=\frac{250}{221}

a=1.1 m/s²

Therefore, the required acceleration is a=1.1 m/s²

8 0
2 years ago
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