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lord [1]
4 years ago
9

A car accelerates from 30 ft/s to 90 ft/ sec in 6 seconds

Physics
1 answer:
Softa [21]4 years ago
7 0

Its acceleration is 10ft/ sec

You might be interested in
Please choose the answer that describes the scientific notation for 3,134,000,000.
Ghella [55]
The answer is B) i am 100% positive
7 0
3 years ago
Water at 0°C loses 1140 calories worth of heat. How much of the water freezes? [Lf= 79.7 cal/g] a) 16.8 g b) 81.5 g c) 0.002 g d
Simora [160]

Answer:

option d)

Explanation:

The amount of heat required to convert the 1 g of ice at 0 degree C to 1 g water at 0 degree C is called latent heta of fusion.

H = m Lf

where,, h is the heat required, m is the mass and Lf is the latent heat of fusion

1140 = m x 79.7

m = 14.3 g

8 0
3 years ago
Force Problem: Four concurrent forces are applied to a 5 Kg mass: 50 N North, 25 N East, 35 N South, and 35 N West.
Kaylis [27]

A) Net horizontal force:
Fx= -35 + 25 + -10N

Net vertical force
Fy= 50 - 35 = 15N

Net force
F^2 = fX^2 +Fy^2
F= 18N

B.) Acceleration of system
a=18/5=3.6m/s^2

C). Equilibriant force must be equal to the net force above
F1= 18N

D.) Acceleration becomes half
a1= a/2 =1.8m/s^2

E.) Equilibrant force also doubles
F" = 2F' = 36N

To learn more about Force, click on the link
brainly.com/question/12785175

#SPJ13

6 0
1 year ago
The heating of Venus led to a further release of ______ from its surface. With nowhere for the greenhouse gas to go, Venus ended
DiKsa [7]

Answer:

The answer would be B

Explanation:

The atmosphere of Venus traps in lots of what from the Sun, it is the hottest planet in our solar system because of this. CO2 is a greenhouse gas and traps in heat. So B would be your answer.

5 0
3 years ago
Which of the following statements is true?
Maurinko [17]

Answer:

Concrete absorbs visible light and re-radiates it as infrared energy.

Explanation:

As we know that concrete will not reflect 100% light incident on it but it will absorb few energy and remaining energy is reflected back.

So here when visible light incident on the concrete then few of its energy is absorbed by is and then the remaining energy is reflected back.

Since the reflected energy must be less than the energy which incident on the concrete so here we will say that the reflected waves must be of less frequency range

so here most appropriate energy range of reflected wave is infrared waves

so here correct answer will be

Concrete absorbs visible light and re-radiates it as infrared energy.

6 0
3 years ago
Read 2 more answers
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