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RSB [31]
3 years ago
12

According to the Law of Conservation of Energy, why does the first hill on a roller coaster always have to be the tallest of all

the other hills?
Physics
1 answer:
enyata [817]3 years ago
5 0
Because it generates enough momentum to keep the train going with out really having to speed up
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In a mass spectrometer a particle of mass m and charge q is accelerated through a potential difference V and allowed to enter a
Ghella [55]

Answer:

m = B²qR² / 2 V

Explanation:

If v be the velocity after acceleration under potential difference of V

kinetic energy  = loss of electric potential energy

1/2 m v² = Vq ,

v² = 2 Vq / m ----------------------- ( 1 )

In magnetic field , charged particle comes in circular motion in which magnetic force provides centripetal force

magnetic force = centripetal force

Bqv = mv² / R

v = BqR / m

v² = B²q²R² / m²  ------------------------- (2)

from (1) and (2)

B²q²R² / m²  = 2 Vq / m

m = B²q²R² / 2 Vq

m = B²qR² / 2 V

7 0
3 years ago
3. A pendulum with a 1.0-kg weight is set in motion from a position 0.04 m above the lowest point on the path of the weight.
gavmur [86]

Answer: K.E = 0.4 J

Explanation:

Given that:

M = 1.0 kg

h = 0.04 m

K.E = ?

According to conservative of energy

K.E = P.E

K.E = mgh

K.E = 1 × 9.81 × 0.04

K.E = 0.3924 Joule

The kinetic energy of the pendulum at the lowest point is 0.39 Joule

6 0
3 years ago
¿Hacia dónde se moverá el burro que se quiere sacar del corral jalándolo dos personas? La primer persona jala con 8 unidades de
dimaraw [331]

Answer:

sim eu também preciso desta respota

7 0
2 years ago
Which scientist began organizing elements into the periodic table?
Gre4nikov [31]

Answer:

B. Dmitri Mendeleev

Explanation:

he invented it

3 0
3 years ago
Read 2 more answers
A cheetah runs with a constant speed of 8 m/s. How far has the cheetah gone after 25 seconds?
Radda [10]
Multiply 25 * 8 = 200
So the cheetah has gone 200 miles in 25 seconds
7 0
3 years ago
Read 2 more answers
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