A crate hangs from a rope that is attached to a metal ring. The metal ring is suspended by a second rope that is attached overhead at two points, as shown. What is the angle if the tension in rope 1 is 0.640 times the tension in rope 2?

Answer:

resultant force = 59 N

Explanation:

we know the formula: Force = mass * acceleration

                                    Force = 25 kg  *   2.36 m/s²

                                    Force = 59 N

Answer:

A. 310.15K

Explanation:

Celsius Temperature Conversion Formula

[K] = [°C] + 273.15

K = C + 273.15

= 37+273.15

= 310.15

Answer:

Not really it also contains theories and practical aspects of it

Answer:

It is not supposed to be but as humans we may make mistakes and have bias

Explanation:

Answer:

work done on the object by gravitational force = 0 joules

Explanation:

work = force × displacement

force = mass × acceleration

so,

work = mass × acceleration × displacement

we know that mass= 10 kg , gravitational acceleration= 9.8 [tex]m/s^2[/tex]

and displacement= 0 m since the object is not moving vertically.

so,

work = 10 × 9.8 × 0 = 0 joules

Answer:

I hope it's helpful for you.

The force that peter applies to the object of distance 40m is 75N.

The force applied to an object can be calculated by dividing the work done on the object by the distance moved. That is;

Force = Work done ÷ distance

According to this question, the work done is 3000 joules while the distance moved is 40m. The force is calculated as follows:

Force = 3000J ÷ 40m

Force = 75N

Therefore, the force that peter applies to the object of distance 40m is 75N.

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Answer: (Note: The weight of a 50-kg object is approximately 500 N; it takes 500 N to lift the object up.) Lifting a 25 kg crate vertically 4 meters. W = (~250 N)*(4 m)

Explanation:

Answer:

16,926

Explanation:

Q = mCΔT

Q = 30.0g × 45.5 × (45.5 - 32.1)

Q = 30.0 × 45.5 × 13.4

Q = 16,926

IMPORTANT NOTE:

Q = Heat

m = mass of sample

C = specific heat

ΔT = Change in temperature

Answer:

P = 2 pi (I0 / M g L)^1/2 for object with inertia of I0

Note that if I0 = M L^2 you have P = 2 pi (L / g)^1/2 the simple pendulum

Radius of sphere = 1.15 = .719 L

I0 = M L^2 + 2/5 M (.719 L)^2 = 1.207 M L^2

P2 = 2 pi (1.207 M L^2 / M g L)^1/2 = 2 pi (1.207 L / g)^1/2

P2 / P1 = (1.207 / 1)^1/2 = 1.10     ratio of periods

Answer:

the ratio is 46:101.

Explanation:

for pendulum 'B', periodic time;

[tex]T_{B} =2\pi \sqrt{\frac{I}{MgL} }[/tex]

inertia of solid sphere[tex]I=\frac{2}{5}MR^{2}[/tex]

I is Moment of Inertia, L is length of rod, and

periodic time for pendulum 'A';

[tex]T_{A}=2\pi \sqrt{\frac{L}{g} }[/tex]

Thus;

[tex]\frac{T_{B} }{T_{A} }=\frac{R}{L}\sqrt{\frac{2}{5} }[/tex]

[tex]\frac{T_{B} }{T_{A} }=\frac{1.15}{1.6}\sqrt{\frac{2}{5} } =\frac{46}{101}[/tex]

The time taken in one complete oscillation is called time period.

The product of mass of particle(m) and square of the distance from rotational axis (r) is called moment of inertia.

[tex]I=mr^{2}[/tex]

hence, the ratio is 46:101.

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Answer:

Sound Energy

Explanation:

Good luck :)

Answer:

Anything that has mass also has gravity. Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is.

Explanation:

Answer:

decrease; direction of the force

Explanation:

Answer:

Magnetism

Explanation:

Magnets, or magnetic fields formed by moving electric charges, may attract or repel other magnets, as well as alter the motion of other charged particles. Magnetism is a natural force caused by moving electric charges. These movements can be tiny and occur within a substance known as magnets. Magnets, or magnetic fields formed by moving electric charges, may attract or repel other magnets, as well as alter the motion of other charged particles. The Lorentz force is exerted on particles by a magnetic field. The force acting on an electrically charged particle in a magnetic field is proportional to the amount of the charge, particle velocity, and magnetic field intensity. The Lorentz force is distinguished by the fact that it forces particles to travel at right angles to their original motion. Some materials, such as iron, are permanent magnets, which means they can maintain a magnetic field indefinitely. These are the most frequent types of magnets found in daily life. Other materials, such as iron, cobalt, and nickel, can be given a temporary magnetic field by enclosing them in a bigger, more intense field, but these materials will soon lose their magnetism. According to HyperPhysics, magnetic fields are created by the movement of electric charges. Electrons all have angular momentum, which is a fundamental quantum mechanical feature known as "spin." Most electrons in atoms tend to form pairs in which one is "spin up" and the other is "spin down," or their angular momenta point in opposing directions. In this situation, the magnetic fields formed by the spins point in opposing directions, canceling each other out. However, certain atoms contain one or more unpaired electrons, which generate a modest magnetic field. The magnetic field's direction is determined by the direction of their spin. When a substantial number of unpaired electrons have their spins aligned in the same direction, they combine to form a magnetic field strong enough to be measured on a macroscopic scale. As the field propagates outward from the north pole and enters through the south pole, it generates a toroidal, or doughnut-shaped field. The Earth is a massive magnet. According to NASA, the planet's magnetic field is generated by flowing electric current within the molten metallic core. A compass points north because the little magnetic needle inside it is hung, allowing it to spin freely inside its shell and align with the Earth's magnetic field. Because it draws the north magnetic poles of compass needles, what we call the Magnetic North Pole is actually a south magnetic pole.

Answer:

Newton's laws of motion and gravity explained Earth's annual journey around the Sun. Earth would move straight forward through the universe, but the Sun exerts a constant pull on our planet. This force bends Earth's path toward the Sun, pulling the planet into an elliptical (almost circular) orbit.

So, the final velocity of the ball when it is 10.0 m above the ground approximately 26.2 m/s.

Hi ! In this question, I will help you. This question uses the principle of final velocity in free fall. Free fall occurs only when an object is dropped (without initial velocity), so the falling object is only affected by the presence of gravity. In general, the final velocity in free fall can be expressed by this equation :

[tex] \boxed{\sf{\bold{v = \sqrt{2 \times g \times h}}}} [/tex]

With the following condition :

We know that :

Note :

At this point 10 m above the ground, the object can still complete its movement up to exactly 0 m above the ground.

What was asked :

Step by Step

[tex] \sf{v = \sqrt{2 \times g \times \Delta h}} [/tex]

[tex] \sf{v = \sqrt{2 \times g \times (h_1 - h_2)}} [/tex]

[tex] \sf{v = \sqrt{2 \times 9.8 \times (45 - 10)}} [/tex]

[tex] \sf{v = \sqrt{19.6 \times 35}} [/tex]

[tex] \sf{v = \sqrt{686}} [/tex]

[tex] \boxed{\sf{v \approx 26.2 \: m/s}} [/tex]

So, the final velocity of the ball when it is 10.0 m above the ground approximately 26.2 m/s.

This question involves the concept of Colomb's Law and electrostatic force.

The electrostatic force will be "6.2 x 10⁻⁸ N".

According to Colomb's Law, every charge exerts an electrostatic force on the other charge, which is directly proportional to the product of the magnitudes of both the charges and inversely proportional to the square of the distance between them.

[tex]F = \frac{kq_1q_2}{r^}[/tex]

where,

Therefore,

[tex]F = \frac{(9\ x\ 10^9\ N.m^2/C^2)(1.6\ x\ 10^{-19}\ C)(1.6\ x\ 10^{-19}\ C)}{(61\ x\ 10^{-12}\ m)^2}[/tex]

F = 6.2 x 10⁻⁸ N

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As we know –

[tex]\qquad[/tex][tex] \purple{\bf \twoheadrightarrow F = m a } [/tex]

[tex]\qquad[/tex][tex] \bf \twoheadrightarrow F = m \dfrac{ v-u}{t} [/tex]

[tex]\qquad[/tex][tex] \sf \twoheadrightarrow 15 = 3 \times \dfrac{v-u}{5} [/tex]

[tex]\qquad[/tex][tex] \sf \twoheadrightarrow 3 \times \dfrac{v-u}{5} = 15 [/tex]

[tex]\qquad[/tex][tex] \sf \twoheadrightarrow \dfrac{3}{5} \times (v-u) = 15 [/tex]

[tex]\qquad[/tex][tex] \sf \twoheadrightarrow (v-u)= 15 \times \dfrac{5}{3} [/tex]

[tex]\qquad[/tex][tex] \sf \twoheadrightarrow (v-u)= \cancel{15} \times \dfrac{5}{\cancel{3}}[/tex]

[tex]\qquad[/tex][tex] \sf \twoheadrightarrow v-u = 5 \times 5 [/tex]

[tex]\qquad[/tex][tex] \purple{\bf \twoheadrightarrow v-u = 25 } [/tex]

Hope you could understand.

If you have any query, feel free to ask.

Answer:

1.989 *10^20

Explanation:

works in acellus!

Answer: a = 0.4 m/s^2

t = 50 s

Explanation:

Convert 72 km/hr to m/s by multiplying it by (1000 m / 1 km)(1 hr / 3600s).

Then, plug this into the formula: (v final)^2 = (v original)^2 + 2*a*d; v original = 0, so it becomes 20^2 = 2*a*500. This yields a = .4 m/s^2.

For the time: a = change in speed / t, which becomes .4 = 20 / t, which yields t = 50 s.

Answer:

Fact based i think if not timely

Explanation:

Answer:

the answer is the first letter in the alphabet

Answer:

Balloon , vaccum,and thats about it at least all i can think of

Answer:

that is weird

Explanation:

i dont know what to say. is there more info?

The role of motivation in physical activity is Motivation is what keeps you going in the moment where you might want to give up.

Physical Activity  can be regarded as any bodily movement  which brings about contraction of skeletal muscles and involves energy expenditure.

However, one need some motivation in order to achieve his desired Physical Activity  goals and this keeps him going in the moment where you might want to give up.

Learn more about Physical Activity at;

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Answer:

it was all of the above

Explanation:

I took the test

Answer:

40m

Explanation:

let's calculate the acceleration first

force = mass × acceleration

rearranging to find acceleration:

acceleration = force ÷ mass

force = 25N, mass = 5.0kg

acceleration = 25 ÷ 5 = 5ms^-2

we can now use the formula v^2 = u^2 + 2as where v = final velocity, u = initial velocity, a = acceleration and s = distance

rearranging v^2 = u^2 + 2as the distance is

s = (v^2 - u^2) ÷ 2a

v = 20, u = 0, a = 5

s = (20^2 - 0^2) ÷ (2 × 5) = 40m

the distance is 40m

Answer:

Light rays that come from a source such as the sun reflect off items and enter our eye. ... While black objects absorb the energy from all colors and become hot, the objects gradually release some of that energy back into the air around it

Explanation:

Hi Army Pls Mark brainliest

Answer:

It would take 3 seconds approximately.

Explanation:

since it's going to stop it's final velocity is 0m/s

Now,

acceleration = (v-u)/t

or, a = (0-35)/t

or, -12 = -35/t

or, t = -35/-12

so, t = 2.9 seconds.

Answer:

6- B

7- I think A

8-B

9-D

10-A