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4 years ago

When driving downhill, your vehicle will accelerate and start moving fast, due to _______________.

Physics

2 answers:

Pachacha [2.7K]4 years ago

5 0

Correct answer choice is:

B) Gravity

Explanation:

Gravity is a force of attraction that endures within any two bodies, any two groups, any two particles. Gravity is not just the attraction among objects and the Earth. It is because the Earth going around the Sun is in a magnetic stability. The speed of the Earth's action generates a centrifugal force which balances the gravitational force among the Sun and the Earth. Because there is no force to hold it.

Stolb23 [73]4 years ago

3 0

B: Gravity.
The force of gravity will pull the car down the hill. The weight/mass of the car also helps this.

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(5, 3) and (7, 3) are two coordinate points for a single object on a position-versus-time graph. Assume time is measured in seco

Maru [420]

Since the y axis stayed consistent, we can assume it did not move at all.
(So your answer would be A)

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4 years ago

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Which of the following statements about elements and atoms is true?

Deffense [45]

Answer:

A. Atoms are the smallest unit of an element.

Explanation:

The correct statement from the given choices is that atoms are the smallest unit of an element.

Atoms are the smallest particles that takes part in chemical reactions and they are made up of protons, neutrons and electrons.

Elements are distinct substances that cannot be split up into simpler substances.
They are made up of only one kind of atoms.
Elements are not changed into atoms by chemical reactions.
In chemical reactions, atoms simply recombine.

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3 years ago

A series of pulses of amplitude 0.25 m are sent down a string that is attached to a post at one end. The pulses are reflected at

Klio2033 [76]

Answer:

Explanation:

since the string is rigidly attached to the post, the reflected and incident pulses are of the same amplitude but different polarities. At the point where the two pulses meet, the amplitude will be the addition of that of the incident and the reflected pulses. i.e Amplitude= 0.25 + -0.25=0m

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4 years ago

To form a hydrogen atom, a proton is fixed at a point and an electron is brought from far away to a distance of 0.529 ✕ 10−10 m,

Elodia [21]

1) First of all, let's calculate the potential difference between the initial point (infinite) and the final point (d=0.529x10-10 m) of the electron.
This is given by:
$\Delta V =- \int\limits^{d}_{\infty} {E} \, dr$
Where E is the electric field generated by the proton, which is
$E=k_e \frac{q}{r^2}$
where $k_e=8.99\cdot10^9~Nm^2C^{-2}$ is the Coulomb constant and $q=1.6\cdot10^{-19}~C$ is the proton charge.
Replacing the electric field formula inside the integral, we obtain
$\Delta V =- \int\limits^{d}_{\infty} {k_e \frac{q}{r^2} } \, dr = k_e \frac{q}{d}= 27~V$

2) Then, we can calculate the work done by the electric field to move the electron (charge $q_e=-1.6\cdot10^{-19}C$ ) through this $\Delta V$ . The work is given by
$W=-q_e \Delta V = - (-1.6\cdot10^{-19}C) (27V)=4.35\cdot10^{-18}~J$

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3 years ago

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If 2.2 lbs = 1.0 kg, and Megan Progress weighs 130 lbs, what is her weight in newtons? W = N (Round your answer to nearest whole

lord [1]

as it is given that

2.2 lbs = 1 kg

here we know that Megan Progress weighs 130 lbs

so its mass in kg is given as

$m = 130 * \frac{1}{2.2} = 59.1 kg$