2 years ago

Which feature of an object affects its weight? Select three options.

Physics

1 answer:

Vadim26 [7]2 years ago

6 0

Answer:mass of the object,how much force earth exerts on the object,and shape of the object

Explanation:

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A woman places her briefcase on the backseat of her car. As she drives to work, the car negotiates an unbanked curve in the road

PSYCHO15rus [73]

Answer:

The force that cause the centripetal acceleration is the static friction, and the briefcase begin to move if the force of centripetal acceleration exceeds the force due to the static friction

Explanation:

Given data:

r = radius = 54.5 m

v = speed of the car = 12.4 m/s

The force due to the static friction that is exerted on the curve in the road is what causes the centripetal acceleration. If the force due to centripetal acceleration is greater than the force of static friction, then the briefcase will begin to roll.

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3 years ago

A force has both______ and _______. Question 1 options: Speed and impact Magnitude and direction Motion and speed Direction and

Travka [436]

Answer:

magnitude

and direction

Explanation:

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2 years ago

What will the temperature of the cosmic microwave background be when the average distances between galaxies are 1.7 times as lar

Aliun [14]

Answer:

$T'=1.58K$

Explanation:

As the Universe expands, the photons of the cosmic microwave background increase its wavelength, making its temperature inversely proportional to the scale factor of the Universe. That is, as the average distances between galaxies increase, the temperature of the cosmic microwave background decreases by the same factor. Therefore, the temperature when the distances between galaxies are 1.7 times as large as they are today will be:

$T'=\frac{T_{now}}{1.73}\\T'=\frac{2.725K}{1.73}\\T'=1.58K$