3 years ago

Please help asap I need this rn

Physics

1 answer:

den301095 [7]3 years ago

6 0

It’s the third one .

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After our sun leaves the main sequence it will most likely

meriva

Our Sun will probably become a red giant before collapsing into a dwarf star.

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3 years ago

A small car with mass m and speed 2v and a large car with mass 2m and speed v both travel the same circular section of an unbank

Alenkasestr [34]

Answer:

(D) F/2

Explanation:

Since the circular section is unbanked, the centripedal acceleration acting on each of the cars is

$a_s = \frac{v_s^2}{r} = \frac{(2v)^2}{r} = \frac{4v^2}{r}$

$a_l = \frac{v_l^2}{r} = \frac{v^2}{r}$

Therefore the centripetal force on each car

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$F_l = m_la_l = \frac{2mv^2}{r}$

Since $F_s = 2F_l$ this means the friction force required to keep the large car on the road is only half of the friction force required to keep the small car on road

So (D) F/2 is the correct answer

5 0

3 years ago

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Westkost [7]

The speed of the carts descent will increase? Not quite sure what you’re asking.

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3 years ago

A barge ﬂoating in fresh water (p = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 550 m2 and height H

Karolina [17]

Answer:

a) $\Delta m = 330000\,kg$ , b) $h = 1.268\,m$

Explanation:

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$\Delta m \cdot g = \rho_{w}\cdot g \cdot \Delta V$