Why is it not easy to witness
inertia on Earth?
A. Magnetism is much stronger.
B. Gravity and friction are always acting on
objects.
C. Our mass is too small.
D. Our mass is too large.

The magnitude of the induced current is, (I=9 /R). The principal of ohm's law is employed in the given problem.

Emf is the production of a potential difference in a coil as a result of changes in the magnetic flux passing through it.

When the flux coupling with a conductor or coil changes, electromotive force, or EMF, is said to be induced.

The given data in the problem is;

B is the magnetic field,= 2t^2−3.

t(time)=3 sec

The induced EMF is found as;

[tex]\rm E= \frac{d \phi}{dt} \\\\\ \rm E= \frac{d(2t^2-3)}{dt} \\\\\ E=4t-3\\\\\ t= 3 sec \\\\ E=12-3 \\\\\ E= 9 \ V[/tex]

From ohm's law;

E=IR

I=E/R

I=9 /R

Hence,the magnitude of the induced current is, (I=9 /R).

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Answer:

it takes 3 hours to travel

Explanation:

120 ÷ 40 = 3

Step 1. distance = speed * time or time = distance/speed. 

Step 2. time = 120 miles/(40 miles/hour) = 3 hours. 

Step 3. ANSWER: It would take 3 hours to travel 120 miles at 40 mph. 

Answer:

KE = F * S     initial kinetic energy will expended in stopping object

1/2 M V^2 = F * S

S = 1/2 * 50 * 35^2 / 800 = 38.3 m      stopping distance

If you need to know the stopping time involved -

(V2 - V1) = a t     where the change in velocity is 35 m/s

a = F / M = 800 / 50 = 16 m/s^2      deceleration of mass

t = 35 / 16 = 2.2 sec

There are two systems that contain only the fundamental frequency and they are the systems C and D.

The term fundamental frequency refers to the lowest frequency of a vibrating body. It does not include the overtones or the harmonics.

From the image shown in the question, there are two systems that contain only the fundamental frequency and they are the systems C and D.

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Answer:

ProvideD :

To FinD :

SolutioN :

[tex] \longrightarrow \tt \: 500 = 100a[/tex]

[tex] \longrightarrow \tt \: \frac{500}{100} = a[/tex]

[tex] \longrightarrow \tt \: a = \: \boxed { \tt{5 \: ms ^{ - 2} }}[/tex]

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Answer:

doppler

Explanation:

The order is followed as

Answer:

See below ~

Explanation:

Done from left to right :

Box 1 : Photosynthesis

Box 2 : Respiration

Box 3 : Combustion

Box 4 : Decomposition

Box 5 : Diffusion

This question involves the concepts of potential energy and work.

"Mr. Gabby" is working the hardest.

In this case, the work done by each person is equal to the potential energy produced by raising the barbell.

[tex]W = P.E=mgh[/tex]

where,

Therefore,

[tex]W=(50\ kg)(9.81\ m/s^2)(4\ m)\\W=1962\ J[/tex]

Therefore,

[tex]W=(45\ kg)(9.81\ m/s^2)(7\ m)\\W=3090.15\ J[/tex]

Therefore,

[tex]W=(47\ kg)(9.81\ m/s^2)(8\ m)\\W=3688.56\ J[/tex]

It is clear that most work is done by Mr. Gabby.

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Answer:

7.5m/s

Explanation:

Law of conservation of momentum: momentum in a system before collision equals to that after collision/

5kg*3m/s=2kg*v

15kgm/s=2kg*v

v=7.5m/s

Answer:

100N

Explanation:

The final velocity of the girl after the collision is determined as -4.8 m/s.

The final velocity of the girl is determined from the principle of conservation of linear momentum.

m1u1 + m2u2 = m1v1 + m2v2

50(0) + 80(0) = 50(v1) + 80(3)

0 = 50v1 + 240

50v1 = -240

v1 = -240/50

v1 = -4.8 m/s

Thus, the final velocity of the girl after the collision is determined as -4.8 m/s.

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Answer:

Gamma rays

Explanation:

have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.

The Answer Is Displacement  

Answer:

C

Explanation:

High pitch due to high frequency b/c of doppler effect. The sound waves in front of the vehicle are being squashed together by the moving ambulance. This causes more vibrations to reach your ear per second.

Match each type of heat transfer method with its description.

Conduction | Convection | Radiation

Conduction ↪ occurs during physical contact between solid objects not in thermal equilibrium.

________________________________

Convection↪ relates to density differences within fluids.

________________________________

Radiation ↪does not require a medium or physical contact to transfer heat.

________________________________

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Water cycle basically involves the change of water into liquid to vapour and again to liquid states through a cyclic manner .

The answers are

Answer:

11. Light waves are electromagnetic (created by electromagnetic impulse)

12. Light waves in a medium are slower V = C / Nm where Nm is the index of refraction of the medium

13. The frequency of the vibration remains the same

14. The wavelength of light in the medium is less

λ = V / f    and it was determined in 12 that the velocity is less in the medium

A child touches the metal leg of a chair. The temperature of metal leg is moving to her hand.

The temperature is the degree of hotness or coldness when an object is touched.

The metals are generally have less temperature compared to the surrounding temperature. When a child touches the leg of a metal chair, she feel cold, but the physical term is temperature which is moved to her hand.

Thus, temperature of metal leg is moving to her hand.

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Answer:

Climate Chrises

Explanation:

Answer:

196 J

Explanation:

Formula

Here, we are given :

Solving

Answer: A material called moderator is used to slow down the neutrons released during nuclear fission. The source's neutrons have a high speed and energy. The neutrons' speed is slowed by heavy water or graphite moderators.

Explanation:

The attraction between masses as small as our bodies, or even objects the size of skyscrapers, is incredibly small. For example, two 1.0-kg masses located 1.0 meter apart exert a force of 6.7×10−11N 6.7 × 10 − 11 N on each other.Answer:

Explanation:

Even between objects the size of skyscrapers or masses as small as our bodies, there is incredibly little attraction. For instance, a force of 6.71011N is generated when two 1.0-kg masses are placed 1.0 meters apart. 6.7 10 11 N on top of one another.

M/s2 is its SI unit. Its vector nature—which includes both magnitude and direction—makes it a quantity. The unit g stands for gravitational acceleration. At sea level, the standard value of g on earth's surface is 9.8 m/s2.

The magnitude of PQ is represented symbolically as | PQ |. The Distance Formula can be used to determine a vector's magnitude if its start and end points' coordinates are known.

Therefore, The distance between a vector's starting point P and ending point Q is its magnitude.

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Answer:

Hence, the transition has to cross the grey zone from liquid to solid or solid to liquid. This grey zone transition is crucial, including the intermolecular forces acting on the molecules and each atom, making the change in state from hot to cold and cold to hot.

Explanation:

Answer:

Hence from liquid to solid or solid to liquid the transition has to cross the grey zone. This grey zone transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.

Explanation:

this is based on ideal gas law PV=nRT.

Where P is pressure, V is volume, R is gas constant and T is temperature. Hence from liquid to solid or solid to liquid the transition has to cross the grey zone.

This grey zone transition is is very crucial which includes the inter molecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.

The best example is ice crystal formation and water formation from ice crystal .

Hence the inter molecular force of attraction happens to be involved with changes in grey zone

Let initial velocity be v

So

initial kinetic energy

Final velocity is four times v i.e 4v

Final kinetic energy

Find ratio

Or

Option C

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Answer:

We know that a solar electrical panel converts sunlight to electricity by means of solar cells and then, the electricity can be used as any electrical current.

I am not familiar with solar heating panels but assume that a liquid is heated by sunlight and then circulated thru the area that needs heating - it converts heat from sunlight to usable heat. The heat energy could also be stored and delivered at a different time (accumulated during the day and delivered at night). This is somewhat similar to a company freezing water at night when electricity is cheaper and then using the cooled water during the day for cooling.

78 percent nitrogen and 21 percent oxygen

Answer:

It's a kinematic equation.

Explanation:

x displacement = (velocity_final * time) - (0.5 * acceleration * time * time)

You should be given a value, context(word problem), or diagram.

If you're deriving for a term just isolate the term.

If you're asking why the -(0.5 * acceleration * time * time) is negative instead of positive, would need context.

Answer:

True

Explanation:

Answer:

True

Explanation:

The four spheres of atmosphere are

Water begins its journey from hydrosphere then goes through atmosphere, biosphere and geosphere respectively