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trapecia [35]
3 years ago
6

Which of the following represents a covalent compound? a. BeF2 b. KF C. PCIE d. Ti

Physics
1 answer:
grin007 [14]3 years ago
3 0
KF is the covalent compound
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kaheart [24]

Answer:

Please selection one of the following

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2 years ago
It is harmful to settle near the airport why
Gemiola [76]
Yes, plane accidents can happen near you, it can harm your property and cause a disaster.
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2 years ago
A golf ball stays on the tee until the golf club hits it. Which of the following principles best describes why this occurs? Grou
givi [52]

Answer:

Newton's First Law of Motion.

Explanation:

Newton's first law of motion states that an object continues to stay in its state of rest, or of uniform motion, until acted upon by an external force.

So in the case of the golf ball here, the ball stays in its state of rest, on the tee, until the golf club hits it, i.e. , applies an external force on it.

Hence we can say that Newton's First Law of Motion is the principle which is most suitable for explaining this phenomenon.

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3 years ago
Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could Chang leave out and still li
Elan Coil [88]
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4 0
2 years ago
Read 2 more answers
What is the impulse of a 3 kg object that starts from rest and moves to 20 m/s?
IrinaK [193]

Answer:

The impulse on the object is 60Ns.

Explanation:

Impulse is defined as the product of the force applied on an object and the time at which it acts. It is also the change in the momentum of a body.

F = m a

F = m(\frac{v_{2}  - v_{1} }{t})

⇒     Ft = m(v_{2} - v_{1})

where: F is the dorce on the object, t is the time at which it acts, m is the mass of the object, v_{1} is its initialvelocity and v_{2} is the final velocity of the object.

Therefore,

impulse = Ft = m(v_{2} - v_{1})

From the question, m = 3kg, v_{1} = 0m/s and v_{2} = 20m/s.

So that,

Impulse = 3 (20 - 0)

             = 3(20)

             = 60Ns

The impulse on the object is 60Ns.

8 0
2 years ago
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