Simple True/False Physics QuestionA bar magnet cut in half will yield two complete bar magnets. True or False?

An explanation of your answer would be appreciated.

Answers

Answer 1

Answer: True because when a bar magnet or any magnet is cut in half they then start to have their own South and North Pole.

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A stone is dropped from a bridge and hits the pavement below in two seconds. What is the velocity of the stone when it hits the pavement?A. 0.20 m/s B. 19.6 m/s C. 4.9 m/s D. 9.8 m/s
An object is dropped from a height H above the ground. This free-falling object requires 1.02 s to travel the last 39 m before hitting the ground. From what height H above the ground did the object fall?

I dont get why its c i dont under the graph for the vertical component in option c

Answers

The vertical component grows at an increasing rate because
gravity is ACCELERATING the object vertically. So its speed
keeps growing. Speed is the slope of the displacement graph.

What is the working procedure of electric geyser

Answers

Working of Electric Geyser:
the phenomenon which occurs is only the transfer of electric energy into the heat energy...
the water enters through the input and then it is passed into a container having alloy coil which is also covered by conductor of heat but this conductor cannot pass electricity into water but only heat...
then water is heated over there and comes out through outlet...

There is a copper coil present in the electric geyser which gets hot when electricity is passed through it . This rod makes the water in the geyser hot .

Charge q is 1 unit of distance away from the source charge S. Charge p is two times further away. The force exerted between S and q is _____ the force exerted between S and p. a. 1/2
b. 2 times
c. 1/4
d. 4 times

Answers

Answer : The correct option is, (d) 4 times

Solution :

According to the Coulomb's law, the electrostatic force of attraction or repulsion between two charges is directly proportional to the product of the charges and is inversely proportional to the square of the distance between the the charges.

Formula used :

$F=k_e(q_1q_2)/(r^2)$

where,

F = electrostatic force of attraction or repulsion

$k_e$ = Coulomb's constant

$q_1$ and $q_2$ are the charges

r = distance between two charges

First we have to calculate the force exerted between S and q when the distance between the charge is 1 unit and let us assumed that the charge be 'q'

$F_(sq)=k_e(qq)/(1^2)=k_e* q^2$ ..........(1)

Now we have to calculate the force exerted between S and p when the distance between the charge is 2 unit at the same charge.

$F_(sp)=k_e(qq)/(2^2)=k_e(q^2)/(4)$ ...........(2)

Equation equation 1 and 2, we get

$(F_(sq))/(F_(sp))=(1)/(4)$

$F_(sq)=4* F_(sp)$

Therefore, the force exerted between S and q is 4 times the force exerted between S and p.

I believe the answer is "4 times".

A place kicker must kick a football from a point 36.0 m from the uprights. As a result of the kick, the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with an initial speed of 20 m/s at an angle of 53° to the horizontal. By how much does the ball clear or fall short of clearing the crossbar?

Answers

Final answer:

By utilizing principles of projectile motion, it is found that the football clears the crossbar by approximately 10.75 meters.

Explanation:

To determine by how much the ball clears or falls short of clearing the crossbar, we need to use the physics principles of projectile motion. The maximum height 'h' of the football can be given by equation of motion: h = (v²sin²θ) / (2g), where 'v' is the initial velocity, 'g' is the acceleration due to gravity and 'θ' is the angle of projection.

Substituting the given values: h = [(20)²sin²53°] / (2*9.8) ≈ 13.8 m above the ground when it was kicked. However, the football was kicked from ground level, so we need to subtract the height of the crossbar from this value, which is 3.05 m. Thus, the ball clears the crossbar by approximately: 13.8 - 3.05 = 10.75 m.

Learn more about Projectile Motion here:

brainly.com/question/20627626

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Only Women and children can be victims of domestic violence

Answers

That statement is wrong.

Domestic violence could happen to anyone.

There are a lot of cases in which the domestic violence's victims are men or elderly people.

that is false because even boys who are nerds or poor and even gay are victims of domestic violence.

A ship needs to sail to an island that is 1,000 km south of its starting point. If the captain sails south at a steady velocity of 30 km/h for 30 hours, will the ship make it? a) Yes b) No c) Insufficient information d) Maybe

Answers

No, it will not reach its point. Here is why:

Velocity x time

30 x 30 = 900 km

900 km is not equal to 1,000 km so the ship would have to sail for another 10 hours.

Hope this helps!

-namanraje777

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