PHYSICS COLLEGE

A ball thrown vertically upward reaches a certain height and comes down again. What can you say about its kinetic energy at the maximum height? It is independent of the height.
It is at its minimum but is not zero.
It is at its maximum.
It is zero.

Answers

Answer 1
Answer: The K.E. at the maximum height is zero, no matter what that height is.
Answer 2
Answer: The kinetic energy at the maximum height is zero

Related Questions

HIGH SCHOOL

1 cosect ------------- = s 1 - cosect

Answers

s=1+csc t /1-csc t
ds/dt =(1-csc t) (1-csc t cot t) - (1+csc t) (1+csc t cot t) / (1-csc t)²
HIGH SCHOOL

Which of the following is NOT a form of energy? a. electrical
c. thermal
b. nuclear
d. magnetic

Answers

An electrical energy is the movement of charge from one point to another. Thermal energy is the movement of heat from one point to another. Nuclear energy is the movement of solar from the sun. Magnetic is a force that attracts a body to another. Magnetic is not a form of energy.

Electric energy is the energy caused by the movement of the electric charges. The moving electric charges form the kinetic energy, thus electrical is the from of energy.

Thermal energy is the energy which usually comes from the heat.This heat is generated by the movement of tiny particles within an object. Thus, thermal energy is the form of energy.

Nuclear energy is the energy which comes from the splitting atoms in a reactor to heat water into steam and generate electricity. Thus, nuclear energy is the form of energy.

The magnets cannot be used to generate energy, as it is kind of a force which attracts a body from the another body, therefore the magnetic is not the form of energy.

Thus, option D is correct.

HIGH SCHOOL

Which is greater; a force of 10N or a force of 5 lbs?

Answers

First you want to turn that 5lbs into a force using the equation:

Weight(N) = mass(kg) × gravity(m/s^2)

That equation is called the weight force equation.

The conversion number for pounds to kilograms is 2.2 so to find how many kg are in 5lbs you divide 5 by 2.2 to get 2.27kg

Then we multiply 2.27kg by 9.81m/s^2 to get 22.30N

So, we can conclude that a force of 5lbs is greater than a force of 10N
One pound of force is equivalent to about 4.45 newtons.

So 5 pounds of force is roughly 22.2 newtons.
That's more than 10 newtons.
MIDDLE SCHOOL

The volume of a gas–filled balloon is 30.0 liters at 313 K and 153 kilopascals pressure. What would the volume be at standard temperature and pressure (0°C and 100 kilopascals)?

Answers

The volume of the gas at standard temperature and pressure is 40.03 L.

General gas equation

The volume of the gas at standard temperature and pressure is calculated as follows;

where;

  • V₂ = 30 L
  • P₂ = 153 kPa
  • T₂ = 313 K
  • T₁ = 0 + 273K = 273 K
  • P₁ = 100 kPa

Thus, the volume of the gas at standard temperature and pressure is 40.03 L.

Learn more about general gas equation here: brainly.com/question/8915032

Use the combined and idea gas law to solve this:

Let the subscript ₁ represent the initial values from pressure volume and temperature and ₂ for final.

So we know

P₁ = 153kpa

V₁ = 30L

T₁ = 313K

P₂ = 100kpa

T₂ = 0 Celsius which is 273 K

So we need to solve for volume:

= P₂V₂

Then we divide by Pressure on the right to give:

/ P₂ = V₂

Plugging all that in:

/ 100kpa = V₂

V₂ = 40.03 L

HIGH SCHOOL

Two capacitors, C1=5700pF and C2=3000pF, are connected in series to a 9.00 V battery. The capacitors are later disconnected from the battery and connected directly to each other, positive plate to positive plate, and negative plate to negative plate. What then will be the charge on each capacitor? Q1?,Q2?

Answers

Answer:

Q1 = 23199 pC

Q2 = 12210 pC

Explanation:

C1 = 5700 pF = 5700 x 10^-12 F

C2 = 3000 pF = 3000 x 10^-12 F

Connected in series

V = 9V

Let the equivalent capacitance is C.

C = C1 x C2 / (C1 + C2) = 5700 x 3000 / (5700 + 3000) = 1965.5 pF

Let the charge is Q.

Q = C x V = 1965.5 x 10^-12 x 9 = 17689.65 x 10^-12 C

The total charge on both the capacitors = 2 x 17689.65 x 10^-12 C

                                                                   = 35379.3 x 10^-12 C

Equivalent parallel capacitance, Cp = C1 + C2 = 5700 + 3000 = 8700 pF

Voltage = V = total charge / Cp = 35379.3 / 8700 = 4.07 V

Charge on 5700 pF, Q1 = C1 x V = 5700 x 4.07 = 23199 pC

charge on 3000 pF, Q2 = C2 x V = 3000 x 4.07 = 12210 pC

HIGH SCHOOL

1. How does an area’s weather differ from the area’s climate? (1 point). A.Weather involves temperature and precipitation and climate involves only temperature.. B. An area’s weather depends on where it is located on Earth and the area’s climate does not.. C.An area’s weather does not change very much and an area’s climate changes many times.. D.Weather is the area’s day-to-day conditions and climate is the area’s average conditions.. 2. All of the following factors contribute to Earth’s climate EXCEPT (1 point) . latitude.. longitude.. transport of heat by winds.. shape and elevation of landmasse

Answers

1. "Weather is the area’s day-to-day conditions and climate is the area’s average conditions" is how an area’s weather differ from the area’s climate. The correct option among all the options given in the question is option "D".

2. All of the following factors contribute to Earth’s climate except longitude. The correct option among all the options given in the question is the second option.
An area's weather differs from an area's climate because weather is the area's daily conditions. The climate is the average conditions of the area.

Longitude does not contribute to the earth's climate. Longitude are imaginary lines that have no impact.
COLLEGE

For light elements, what is the ratio of neutrons to protons that predicts a stable nucleus?

Answers

Answer:

1

Explanation:

The ratio of number of neutrons to the number of protons decide the stability of nucleus.

If the ratio is one, then the nucleus is stable.

The ratio would be 1:1 or in other terms the number of protons are equal to the number of neutrons and vice-versa.
MIDDLE SCHOOL

Which of the following pairings are more likely to be held together with the strong nuclear force? •protons with the electrons
•neutrons with the electrons
•neutrons with neutrons
•neutrons with protons

Answers

Which of the following pairings are more likely to be held together with the strong nuclear force

Explanation:

1.What does a strong nuclear force do in an atom? It repels electrons from other electrons. It repels protons from other protons. It attracts protons and neutrons.

2.The chain reaction requires both the release of neutrons from fissile isotopes undergoing nuclear fission and the subsequent absorption of some of these neutrons in fissile isotopes.

3.The strong nuclear force holds most ordinary matter together because it confines quarks into hadron particles such as the proton and neutron. In addition, the strong force binds these neutrons and protons to create atomic nuclei.

Answer:

Neutrons with Neutrons

Explanation:

Option C is correct on Odyssey

HIGH SCHOOL

*Brainliest if answered with in 5 min* At which temperature does the motion of atoms and molecules stop?

A. 0°C
B. 0 C
C. 0°K
D. 0 K

Answers

Your answer is going to be 0 degrees Kelvin!

This is really sneaky.  Of course it's going to be "Absolute Zero" ... the bottom of the Kelvin scale ... but what in the world is the difference between choice-C and choice-D ? ?

On the Kelvin scale, just to be different I guess, the unit of temperature is not called "the degree" Kelvin.  On that scale, the unit is called "the Kelvin", and the temperature is called 'so many' "Kelvins".

So the correct choice is D ... "zero Kelvins".

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