36 The height of a 30-story building is approximately(1) 10^0 m (3) 10^2 m
(2) 10^1 m (4) 10^3 m

Answers

Answer 1
Answer: An approximation used to measure building height is 10 feet per building level.

Converting from feet to meters using the equation:
1 ft = 0.3048m
10 ft = 3.048m

Multiplying that by 30 storeys, we get:
3 x 3.048m = 91.44m, which is near the answer of (3) 10^2 m or 100m.

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According to the _____ model, the solar system formed from a cloud of dust and gas.

Answers

The correct answer to the question above is nebular. According to the NEBULAR model, the solar system formed from a cloud of dust and gas. Nebula model is a hypothesis in which tells you the origin (formation and evolution) of the solar system. 

Answer:

According to the NEBULAR model, the solar system formed from a cloud of dust and gas.  

Explanation:

According to Nebular model, the solar system was formed from molecular cloud of dust and gases. The material accreted and collapsed under its own weight. The rotating core gathered more mass increasing its temperature and pressure until nuclear fusion reaction started and Sun was born. The rest of the material flattened into disk from which planets were formed.

A pair of equal charges are separated by .75 m. There's a 2500 N force acting on them. What is the strength of the charge? Plz explain how you got the answer too.

Answers

The magnitude of each charge is 3.94 x 10^(-4) coulombs.

We have a pair of equal charges are separated by 0.75 m and there's a 2500 N force acting on them.

We have to strength of the charge.

What is the formula to calculate the force between two point charges separated by a some distance?

According to Coulomb's law, the formula to calculate the force between the two point charges (say q and Q) separated by a some distance (say r) is given by -

F = (1)/(4\pi \epsilon_(o) ) (qQ)/(r^(2) )

According to the question -

Force between two point charges equals to = F = 2500 N

Distance between the point charges = 0.75 m

Let's assume the magnitude of each charge be x, therefore using the coulomb's law, we get -

F  =  (1)/(4\pi \epsilon_(o) ) (qQ)/(r^(2) )

x^(2)  = (2500 * 0.75* 0.75)/(9* 10^(9) )\nx^(2) = (2500* 75* 75)/(9* 10^(13) ) \nx^(2) = 1.56* 10^(-7)

x = 0.000394\nx = 3.94 * 10^(-4) coulombs

Hence, the magnitude of each charge is 3.94 x 10^(-4) coulombs.

To understand more about coulomb's law visit the link below -

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Answer:

4.5643546 × 10^ -4

Explanation:

How does a proper warm up affect blood flow

Answers

It speeds blood flow. The heart beats faster, it is beating blood faster.

What's the first thing you should do after retrieving a boat onto a trailer?

Answers

The first thing you should do after retrieving a boat onto a trailer is to secure the boat to the trailer. This is important to ensure the boat remains stable and safe during transportation.

Here are the steps to secure the boat to the trailer:

1. Position the boat properly: Align the boat on the trailer so that it is centered and evenly distributed. Make sure the boat is positioned in such a way that the weight is balanced and evenly distributed across the trailer.

2. Attach the bow strap: The bow strap is a strong, adjustable strap that is used to secure the front (bow) of the boat to the trailer. Connect one end of the bow strap to the trailer and the other end to a secure point on the boat's bow. Make sure the strap is tight and secure, but not overly tightened to the point of damaging the boat.

3. Connect the stern tie-downs: Stern tie-downs are straps or ropes used to secure the rear (stern) of the boat to the trailer. Attach one end of each stern tie-down to the trailer and the other end to a secure point on the boat's stern. Make sure the stern tie-downs are tight and secure, but again, avoid over-tightening.

4. Check the connections: After attaching the bow strap and stern tie-downs, double-check all the connections to ensure they are properly secured. Give each strap a gentle tug to make sure it is tight and won't come loose during transport.

5. Secure loose items: Before hitting the road, secure any loose items in the boat, such as life jackets, paddles, or fishing gear. These items should be properly stowed and secured to prevent them from shifting or falling out during transportation.

Know more about trailer:

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Answer:

Set the parking brake of the towing vehicle, and put it in park (or first gear if you have a manual transmission).

Move the vessel onto the trailer far enough to attach the winch line to the bow eye of the vessel. ...

Shut off the engine, and raise the engine or outdrive.

Pull the vessel out of the water.

Explanation:

How does a generator work?

Answers

An electric generator is a device that converts mechanical energy obtained from an external source into electrical energy as the output.

It is important to understand that a generator does not actually ‘create’ electrical energy. Instead, it uses the mechanical energy supplied to it to force the movement of electric charges present in the wire of its windings through an external electric circuit. This flow of electric charges constitutes the output electric current supplied by the generator. This mechanism can be understood by considering the generator to be analogous to a water pump, which causes the flow of water but does not actually ‘create’ the water flowing through it.

The modern-day generator works on the principle of electromagnetic induction discovered by Michael Faraday in 1831-32. Faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field. This movement creates a voltage difference between the two ends of the wire or electrical conductor, which in turn causes the electric charges to flow, thus generating electric current.

Is it possible to change the translational kinetic energy of an object without changing its rotational energy?

Answers

Yes, it is possible to change the transitional kinetic energy of an object without changing its rotational energy. For example dropping a spinning ball into the side of the table, the ball will keep its rotational motion while its transitional kinetic energy is changing.