F. A 50. A resistor (R2), and unknown resistor R2, a 120 Volt source, and an ammeter are connected in a
complete circuit. The ammeter reads 0.50 ampere (current).
R1
a. Determine the resistance of Rz.
R2

Answer: 26.67 m/s

Explanation:

Given

Length traveled by the ball [tex]s=40\ m[/tex]

Time taken to reach the goal post is [tex]t=3\ s[/tex]

Initial velocity [tex]u=0\ m/s[/tex]

Using the second equation of motion

[tex]\Rightarrow s=ut+\frac{1}{2}at^2\\\Rightarrow 40=0+\frac{1}{2}a(3)^2\\\Rightarrow a=\frac{80}{9}\ m/s^2\\[/tex]

Now using

[tex]\Rightarrow v^2-u^2=2as\\\\\Rightarrow v^2-0=2\times \frac{80}{9}\times 40\\\\\Rightarrow v=\sqrt{\dfrac{80\times 80}{9}}=\dfrac{80}{3}\\\Rightarrow v=26.67\ m/s[/tex]

The velocity of ball will be 26.67 m/s

Answer: They have different rigidities.

Explanation:

Answer:

Informational references provide only a limited amount of specific statistical information. false. Information should be________to ensure more than one source provides the same factual information.

Explanation:

Answer:

The statement presented above is TRUE. Yes, it's up to us whether to accept the statement whether as reliable or not. At the end of the day, it is our responsibility to know the facts and not let other people dictate what you have to think about. It has to be taken into account that you can decide for yourself.

Explanation:

Answer:

D

Explanation:

To represent objects, processes, and systems that are too large, too small, or too complex to study directly

The correct option is (d) To represent objects, processes, and systems that are too large, too small, or too complex to study directly.

The 4 types of scientific models -

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When driving a car, as you very well know, the engine is working, by enabling the car to move, and helping the tires roll. Power is used by enabling the car to turn on, the engine helps again.

Answer:

c) gravitational field strength

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⭐Air Resistance is the factor, which limits the speed of an object falling through the air...⭐

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Answer:

I know for sure that it's either A or B have a great day sorry I don't know which one completely

Answer: 134 neutrons are there in the nucleus of Radon-220

Explanation:

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

Thus, number of protons = atomic number = 86

Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.

Mass number = Number of protons + Number of neutrons

220 = 86 + Number of neutrons

Number of neutrons = 134

Answer:

MOMENTUM of the football player before collision is 110×8 =880

Explanation:

Answer:

[tex]\lambda=5.70\times 10^{-7}\ m[/tex]

Explanation:

The frequency of a sodium vapor lamp, [tex]f=5.26\times 10^{14}\ Hz[/tex]

We need to find the wavelength of light. The relation between wavelength, frequency and speed of light is given by :

[tex]c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{5.26\times 10^{14}}\\\\\lambda=5.70\times 10^{-7}\ m[/tex]

So, the wavelength of light is equal to [tex]5.70\times 10^{-7}\ m[/tex].

Answer:

the answer is D I THINK

Explanation:

Answer:

C

Explanation:

Answer:

A) weight

Explanation:

Hope it helps :))

Answer:

WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL

Explanation:

subtract your age from 220

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Potential Energy.

Here lets calculate it one by one ;-

1.) P = mgh ==> 100*9.81*202===> 198162 Joules

2.) P = mgh ==> 90*9.81*202 ==> 178345.8 Joules

3.) P = mgh ===> 45*9.81*202 ===> 89172.9 Joules

4.) P = mgh ===> 58*9.81*202 ===> 114933.96 Joules

5.) P = mgh ===> 0.001*9.81*202 ===> 1.981 Joules

6.) P = mgh ===> 1.00*9.81*202 ===> 1981.62 Joules

7.) P = mgh ===> 1.998*9.81*202 ==> 3959.27 Joules

8.) P = mgh ===> 1.5*9.81*202 ===> 2971.43 Joules

9.) P = mgh ===> 0.1*9.81*202 ===> 198.162 Joules.

Above we calculated the potential energy for every mass given above.

hope it helps!!!!!!!!!!!!!!!

Answer:

B

Explanation:

......................

Answer:

78.35°

Explanation:

THIS IS THE COMPLETE QUESTION BELOW;

A layer of ethyl alcohol (n = 1.361) is on top of water (n = 1.333). To the nearest degree, at what angle relative to the normal to the interface of the two liquids is light totally reflected?

From Snell's Law,

(ni)/(nr) = Sin (θr) / Sin (θi)

Where

θi = Angle of Incidence

θr = Angle of refraction

ni = Refractive index given for ethyl alcohol

nr = Refractive index of medium from which light is refracted

ni = 1.361

nr = 1.333

, θr = 90° ( Critical Angle is reffered to as Angle of Incidence at refracted angle of 90°) (θi = θc)

(ni)/(nr) = Sin (θr) / Sin (θi)

1.361/ 1.333 = Sin (90°)/ Sin( θc)

1.021= 0.894/ Sin( θc)

Sin( θc)= (0.9794

θc = Sin⁻¹ 0.9794)

θc = 78.35°

Answer:

It's typically around 120mph. You'll reach this speed a few seconds into your jump, so for those few moments straight out the door, you'll be falling a bit more slowly and therefore covering less distance. We usually estimate around 10 seconds for the first 1,000 feet, then 5 seconds for each 1,000 feet after that.

Explanation:

Answer:

The end velocity of the sculpture is 7.00 m/s²

Explanation

The equation needed here is v = √(2gh).  Let's do it:

v = √(2 × 9.8m/s² × 2.5m)

v = √(49.0 m²/s²)

v = 7.0m/s

Funny enough the numbers given don't have the accuracy demanded.  We're given is 2.5m which is only accurate to the tenths, and 30kg which is only accurate to the nearest integer.  Also, presumably the acceleration due to Earth gravity that's provided is only 9.8m/s², so that's still only the nearest tenth.  So taking those and asking to find the answer to the nearest hundredth is pointless.

But whatever.  The given answer is correct to the nearest hundredth.  7.00m/s²  To be sure, I plugged it into a form on a physics page that does exactly that, and the answer they gave was 7.0023745972349, so we have it rounded correctly.

Answer:

Electromagnetic waves are created by oscillating charges (which radiate whenever accelerated) and have the same frequency as the oscillation. Since the electric and magnetic fields in most electromagnetic waves are perpendicular to the direction in which the wave moves, it is ordinarily a transverse wave.

Answer: Electromagnetic waves are the combination of electric and magnetic field waves produced by moving charges.

The creation of all electromagnetic waves begins with a charged particle. This charged particle creates an electric field (which can exert a force on other nearby charged particles). When it accelerates as part of an oscillatory motion, the charged particle creates ripples, or oscillations, in its electric field, and also produces a magnetic field (as predicted by Maxwell’s equations).

Once in motion, the electric and magnetic fields created by a charged particle are self-perpetuating—time-dependent changes in one field (electric or magnetic) produce the other. Both electric and magnetic fields in an electromagnetic wave will fluctuate in time, one causing the other to change.

Electromagnetic waves (photons) are produced anytime a charged particle experiences a change in velocity.. The electromagnetic wave (radiation) that is produced when the charge particle changes it’s velocity is how energy is conserved. This energy is light.

Hope this helps have a awesome day/night❤️✨

Explanation:

Answer:  Hand span

Explanation: Hand span is not a standard unit.

Second is the unit of time.

Meter is the unit of length or distance covered by an object.

Gram is the unit of weight of an object.

Hand span is not a standard unit. This is because the size of hand varies from person to person. Hence, the correct option is (c) "hand span".

Answer:

Answer: The difference in air pressure between air masses.

Answer:

The difference in air pressure between air masses.

Explanation:

The difference in air pressure, just like letting the higher-pressure air out of a balloon, determines the speed of the wind.

Answer: The stratosphere and the troposphere are defined by the variation in temperature with height. Within a troposphere, the temperature drops as altitude increases, and drops fast enough for convection to occur. Whereas within a stratosphere, the temperature rises with increasing altitude. Features of the atmosphere change with altitude: density decreases, air pressure decreases, temperature changes vary. Different temperature gradients create different layers within the atmosphere. The lowest layer is the troposphere where most of the atmospheric gases and all of the planet's weather are located.

Explanation:

Answer:

Opposition of passing a electric circuit

Answer:

I'm 100% sure it's D. but if it isn't, sorry :(