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wlad13 [49]
3 years ago
11

50 POINTS! A supplier wants to make a profit by buying metal by weight at one altitude and selling it at the same price per poun

d weight at another altitude. The supplier should
a. buy at high altitude and sell at low altitude
b. buy at low altitude and sell at high altitude
c. disregard altitude because it makes no difference
Physics
2 answers:
Mazyrski [523]3 years ago
8 0

They should A- buy at a high altitude and sell at a low altitude

Tems11 [23]3 years ago
5 0

Choice A is the right answer! Buy at high altitude and sell at low altitude

Hope this helps :)

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lidiya [134]

Answer:

22.22m/s

Explanation:

The momentum before a collision = momentum after collision so...

work out the momentum of the first object (the bullet)

its p = mv

0.04 kg × 300 m/s  = 0.54 kg × v

rearrange this to find v which is 0.04 x 300 = 12

so 12 = 0.54 x v

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hope this helps!

7 0
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A proton is accelerated from rest through a potential difference V0 and gains a speed v0. If it were accelerated instead through
Svet_ta [14]

Answer:

The speed is \sqrt{2}v_{0}.

(a) is correct option.

Explanation:

Given that,

Potential difference V= V_{0}

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If it were accelerated instead

Potential difference V'=2V_{0}

We need to calculate the speed

Using formula of initial work done on proton

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We know that,

\Delta W=\Delta K.E

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Put the value into the formula

q V_{0}=\dfrac{1}{2}mv_{0}^2

v_{0}^2=\dfrac{2qV_{0}}{m}....(I)

If it were accelerated instead through a potential difference of 2 V_{0}, then it would gain a speed will be given as :

Using an above formula,

v_{0}'^2=\dfrac{2qV_{0}}{m}

Put the value of V_{0}

v_{0}'^2=\dfrac{2q\times2V_{0}}{m}

v_{0}'=\sqrt{\dfrac{4qV_{0}}{m}}

v_{0}'=\sqrt{2}v_{0}

Hence, The speed is \sqrt{2}v_{0}.

6 0
3 years ago
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Answer:

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=952/6 + 505/2

=( 952+ 1515)/6

=411.16

Explanation:

Make sure to read and go with it

4 0
3 years ago
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A 1 200-kg automobile moving at 25 m/s has the brakes applied with a deceleration of 8.0 m/s2. How far does the car travel befor
Alja [10]

Answer:

Δx = 39.1 m

Explanation:

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        where  vf is the final velocity (0 in our case), v₀ is the initial velocity

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  • Solving (1) for Δx, we have:

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Which statement did Niels Bohr make about atoms?
Rasek [7]
I believe it is A, if I am remembering correctly from my last semester class. 
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4 years ago
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