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Ugo [173]
3 years ago
8

What would be three forces acting on a roller coaster? I have gravity, air resistance, but I can't think of the third.

Physics
1 answer:
balandron [24]3 years ago
4 0
There better be a normal force of the roller coaster on to you.
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A rocket with a mass of 62,000 kg (including fuel) is burning fuel at the rate of 150 kg/s and the speed of the exhaust gases is
mezya [45]

Answer:

h≅ 58 m

Explanation:

GIVEN:

mass of rocket M= 62,000 kg

fuel consumption rate =  150 kg/s

velocity of exhaust gases v= 6000 m/s

Now thrust = rate of fuel consumption×velocity of exhaust gases

=6000 × 150 = 900000 N

now to need calculate time t = amount of fuel consumed÷ rate

= 744/150= 4.96 sec

applying newton's law

M×a= thrust - Mg

62000 a=900000- 62000×9.8

acceleration a= 4.71 m/s^2

its height after 744 kg of its total fuel load has been consumed

h= \frac{1}{2}at^2

h= \frac{1}{2}4.71\times4.96^2

h= 58.012 m

h≅ 58 m

4 0
4 years ago
A student sees a newspaper ad for an apartment that has 1730 square feet (ft2) of floor space. How many square meters of area ar
SVETLANKA909090 [29]

The correct answer for this question is 160.89 m².

The square footage of a newspaper ad for an apartment is = 1730ft²

We know that one square foot equals 0.093 square meters.

We can determine the area in square meters using the above conversion.

Total square meters = 0.093×1730ft² (or) 1730÷10.7 

                                    = 160.89 m²

To know more about conversion calculations, click here:

brainly.com/question/6703327

#SPJ4

6 0
2 years ago
The current supplied by a battery slowly decreases as the battery runs down. Suppose that the current as a function of time is:
ludmilkaskok [199]

Answer: 8.1 x 10^24

Explanation:

I(t) = (0.6 A) e^(-t/6 hr)

I'll leave out units for neatness: I(t) = 0.6e^(-t/6)

If t is in seconds then since 1hr = 3600s: I(t) = 0.6e^(-t/(6 x 3600) ).

For neatness let k = 1/(6x3600) = 4.63x10^-5, then:

I(t) = 0.6e^(-kt)

Providing t is in seconds, total charge Q in coulombs is

Q= ∫ I(t).dt evaluated from t=0 to t=∞.

Q = ∫(0.6e^(-kt)

= (0.6/-k)e^(-kt) evaluated from t=0 to t=∞.

= -(0.6/k)[e^-∞ - e^-0]

= -0.6/k[0 - 1]

= 0.6/k

= 0.6/(4.63x10^-5)

= 12958 C

Since the magnitude of the charge on an electron = 1.6x10⁻¹⁹ C, the number of electrons is 12958/(1.6x10^-19) = 8.1x10^24 to two significant figures.

5 0
4 years ago
The specific latent heat of fusion of ice is 3.3×105J/kg
Dima020 [189]
Vai c fude
..........................................................................
7 0
4 years ago
PLEASE HELP ILL GIVE CROWN!!!!!!!!!!!!!!!
kkurt [141]

Explanation:

can i get the crown please now hehehh ahhhahah hoohoh

they have a pictures just click and thats the answer ↑

8 0
3 years ago
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