Can someone please answer this, ill give you brainliest Would be very appreciated.

Explanation:

Acceleration = final velocity - initial velocity

______________________

time taken

= 20 m/s - 60m/s

________________

5seconds

= -40 m/s

_______

5 seconds

= -8m/s^2

Answer:

16 velocity

Explanation:

Answer:

it is A fffgfhdshhsdsggsgssggsdggedgdgegggeeegeegegehe

Answer: summer

Explanation:

In June, when the Earth is tilted towards Sun and the Sun reaches its highest point in the sky, that is called the summer solsticeand is the longest day of the year.

Answer:

No, some energy will be dissipated energy due to work of air resistance.

Answer:

Line 2 is the amplitude

Explanation:

The amplitude is the distance from equilibrium to the top of the maximum or minimum of the wave.

Answer:

(a) 217 Ra          (b)     29 P

      84                          16

Explanation

(a) 221 Rn ---------------> 4 He + 217 Ra

      86                           2             84

    the mass number is reduced by 4 while the atomic number is reduced               by 2 since an alpha particle is emitted

(b) 29 P ------------------> 0 e + 29 P

       15                          -1         16

     the mass number remains the same while the atomic number is reduced by -1 since a beta particle is emitted

Answer:

b)

Explanation:

The work done by friction is equal to the all of the initial Kinetic Energy lost when the vehicle comes to a complete stop

KE = 1/2 m v^2

       72 km / hr = 20 m/s

 KE = 1/2  *  1000 kg  * (20 m/s)^2  = 200 000 J = 2 x 10^4 J

Answer:

look at the explanation

Explanation:

the first one, 4th one and 6th one will go into repulsion and the others will go into attractive (hope this helps and Goodluck on any other questions)

Answer:

[tex]3 m/s^{2}[/tex]

Explanation:

ΣF=ma

The two forces at play are the force applied and the force due to friction. As they are opposing forces set the direction being pushed as the positive in the x direction. the equation you come out with is 60 - 15=(15)A (we know mass to be 15kg). Solve for 3 m/s^2.

The rest energy of the proton will be 938 MeV. The rest energy is related to the rest mass of the proton.

The rest energy is the rest mass times the square of the speed of light of a particle at rest in an inertial frame of reference.

The rest energy is found as;

[tex]\rm E_R= mC^2\\\\ E_R=(1.67 \times 10^{-27})\times 3 \times 10^8)^2\\\\ E_R= 9.375 \times 10^8 / eV[/tex]

Convert into the mega electron volt;

[tex]\rm E_R= 938 \ MeV[/tex]

Hence, the rest energy of the proton will be 938 MeV

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Answer:

blizzard

Explanation:

A blizzard is a severe snowstorm characterized by strong sustained winds and low visibility

The wavelength of the water wave having a amplitude of 1.2 meters every 0.4 seconds is 1.8 m .

Wavelength is the total distance traveled by a wave in one cycle.

To calculate the wavelength of the wave, we use the formula connecting

speed, wavelength, and Period.

Formula:

Where:

Make λ the subject of the equation

From the question,

Given:

Substitute these values into equation 2

Hence, The wavelength of the water wave having a amplitude of 1.2 meters every 0.4 seconds is 1.8 m .

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Answer / Explanation:

B

Potential difference is measured using a device called a voltmeter . Just like ammeters, some types have a pointer on a dial, but most have a digital display. However, unlike an ammeter, you must connect the voltmeter in parallel to measure the potential difference across a component in a circuit.

The potential energy of a barbell is increased when it is lifted by the weight lifter and work is done on the barbell.

Energy is the ability to do work. We must note that the weightlifter does work in a gravitational field.

Hence, the potential energy of a barbell is increased when it is lifted by the weight lifter and work is done on the barbell.

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Answer:

165.5

Explanation:

vrms × root 2= v max

Hence we get v maximum =165.5 V

Answer:

Water power, eg tidal and hydroelectricity , is reliable and predictable because of the Moon causing the tides and rainfall filling reservoirs. They can also be used to supply additional demand.

Explanation:

HOPE IT HELPS.

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The increasing order for the first ionization energy has been:

< C < N < O.

The first ionization energy has been the amount of energy required for removing the electron from the gaseous state. The molecules that have small structures and available valence electrons, the ionization energy has been decreased.

In the periodic table, on moving from left to right there has been an increase in the size of the atom, as well as the valence electrons. The increase in size results in more attraction by the nucleus resulting in increased first ionization energy.

The increasing order for the first ionization energy has been:

C < N < O.

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Answer:

"where crests and troughs have their maxima at the same time"

Crests and troughs are 180 deg out of phase and when they have their maxima at the same time and place, their net contribution will be zero"

Answer:

Positive and Negative, commonly carried by charge carriers protons and electrons. Examples of the types of charges are subatomic particles or the particles of matter: Protons are positively charged. Electrons are negatively charged.

Explanation: ;)

electrostatic charge and symbolized q, is a characteristic of a unit of matter that expresses the extent to which it has more or fewer electrons than protons.

Answer:

An ellipse with the Sun at one of the foci of the ellipse

Explanation:

Planets have elliptical orbits

The distance of the airplane from the radar will be 1.08×10⁶ m. Distance can refer to a physical length.

Distance is a numerical representation of the distance between two objects or locations.

The distance of the airplane from the radar is found by the formula;

Distance = velocity × time

Distance =  3.0 x 10^8 m/s× 0.0036 s,

Distance =  1.08×10⁶ m.

Hence, the distance of the airplane from the radar will be 1.08×10⁶ m.

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Answer:

Those common things which they both have are:i) They both start off with fusing hydrogen into helium.and ii) They both generate their energy by the process called nuclear fusion.((hope it is useful for u all))

The force of the tripped catch exerted on the 2.5 Kg ball moving at 8.5 m/s to the Left is 160 N

The force exerted on the ball can be obtained as follow:

F = m(v + u) / t

F = [2.5(7.5 + 8.5)]/ 0.25

F = 40 / 0.25

F = 160 N

Thus, the force exerted on the ball is 160 N

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Answer:

It is pulled up on the left side. took the test

Explanation:

Answer:

See below

Explanation:

F = ma

7 X 10^4   =  1.05 x 10^5   * a

a = .666  = 2/3 m/s^2

The downward force of air on top of the wings decreases. The net lifting force of the air on the wings increase. A passenger jet in the air increases its speed.