Answer:
1840:1
Explanation:
If m is the mass of the electron, and 1840m is the mass of the proton, then:
p₁ = p₂
m₁v₁ = m₂v₂
m v₁ = 1840m v₂
v₁ = 1840 v₂
The kinetic energy of the electron is:
KE₁ = ½ m₁ v₁²
KE₁ = ½ m (1840 v)²
KE₁ = 1692800 mv²
The kinetic energy of the proton is:
KE₂ = ½ m₂ v₂²
KE₂ = ½ (1840m) v₂²
KE₂ = 920 mv²
The ratio of the kinetic energies is:
KE₁ / KE₂
(1692800 mv²) / (920 mv²)
1840:1
Jenny is traveling southward. In order to stop, she needs a northward acceleration.
A better way to say it:
Jenny is traveling southward in her bumper car, so the direction of her velocity is south. In order to reduce her velocity to zero, a velocity of equal magnitude but directed north must be added to it. Then the change in velocity is positive northward, and the change in velocity per unit time is acceleration.
Answer:
<h3>
The maximum compression of the spring m</h3>
Explanation:
Given :
Mass of block 1.7 Kg
Height m
Spring constant
From the conservation of energy,
Here, potential energy of the block is converted into elastic potential energy of spring.
Where maximum compression of the spring,
m
Hence, the maximum compression of the spring m
(a) The maximum height reached by Jane is 1.8 m.
(b) The length of the vine will affect the time of her motion, which will impact on speed and maximum height attained.
<h3>
Maximum height Jane can swing</h3>
apply the principle of conservation of energy;
P.E = K.E
mgh = ¹/₂mv²
h = v²/2g
where;
- v is speed of jane
- g is acceleration due to gravity
h = (6²)/(2 x 9.8)
h = 1.84 m
<h3>Time of motion of Jane</h3>
Assuming Jane to be in simple harmonic motion, the time of motion is calculated as;
T = 2π√(L/g)
where;
- L is the length of the vine
Thus, the length of the vine will affect the time of her motion, which will impact on speed and maximum height attained.
Learn more about maximum height here: brainly.com/question/12446886
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Work can be defined as change in kinetic energy