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3 years ago

Answer 4 and I’ll give brainlist

Physics

1 answer:

Sedbober [7]3 years ago

4 0

Answer:

Answer C

Explanation:

The closer two masses are, the greater the gravity force between them.

This is shown in the formula

Fg = GMm/R²

Smaller distance R means greater force Fg

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What is the mass of a vehicle that has 50,000 N and 25M/S/S

natali 33 [55]

Answer:

F = 1250000 N

Explanation:

If you have 50,000 S, by 25 M. It would be calculated to 1,250,000 N.

7 0

3 years ago

The weight of a body floating in a liquid is

djverab [1.8K]

Answer:

The apparent weight is the weight of the body minus the weight of the liquid displaced. The body will float only when both the weights are same. In this case, the given body of weight W is floating and hence the apparent weight is zero.

4 0

3 years ago

Read 2 more answers

A skateboarder is trying to skate horizontally off a building and jump over a pool as shown! The pool is 25.0m wide and the roof

umka21 [38]

Answer:

a) t = 2.55s

b) $v_{0x} = 9.80 m/s$

c) yes

Explanation:

In order to solve this problem, we can start by drawing a sketch of the situation so we can better visualize what the problem is about (see attached picture).

For the first question. We are talking about a movement in two dimensions. So on the first question they are asking us for vertical movement. It will be uniformly accelerated, so we can use the following formula:

$y_{f}=y_{0}+V_{0y}t+\frac{1}{2}at^{2}$

We know the following:

$y_{f}=0$

$y_{0} = 32m$

$V_{0y}=0$

t=?

$a=-9.81 m/s ^{2}$

With this data, we can simplify our equation, so we end up with:

$y_{0}+\frac{1}{2}at^{2}=0$

so we can now substitute the data we know and solve for t:

$32m-\frac{1}{2}(9.81 m/s^{2})t^{2}=0$

$(-4.905 m/s^{2})t^{2}=-32m$

$t^{2} = \frac{-32m}{-4.905 m/s^{2}}$

$t=\sqrt{6.52s^{2}}$

t = 2.55 s

For part b, since we are talking about horizontal movement and we are neglecting drag, this means that his horizontal speed will be constant. So we can use the following formula:

$V_{x}=\frac{x}{t}$

we know he most move a horizontal distance of 25 meters in a time of 2.55s so we get:

$V_{x} = \frac{25m}{2.55s}$

$V_{x}=9.80 m/s$

c) for part c, we can do the conversion between miles per hour to meters per second like this:

$\frac{27mi}{1hr}*\frac{1hr}{3600s}*\frac{5280ft}{1mi}*\frac{0.3048m}{1ft}$

so the given initial speed is equivalent to:

12.07 m/s

this is greater than the minimum 9.80 m/s we need, so the skater will clear the pool at this speed.

7 0

3 years ago

can cuclin concentration durng mitosis be explained by the fact that the cell divides in two and thus divides the material in th

lana [24]

Answer: No

Can the change in cyclin concentration during mitosis be explained by the fact that the cell divides in two and thus divides the material in the cell into two smaller volumes?

Explanation: The cyclin concentration is not halved but degraded during mitosis.

There is an increase in cyclin concentrations at interphase. These changes are caused by the presence of Cyclin Dependent Kinase (CDK) complexes. CDK being a substrate of cyclin catalyses cyclin, thereby increasing its concentration. During mitosis, cyclins are destroyed, signifying the end of mitosis and cytokinesis.

Without this process, it will be impossible for the cell to exit mitosis.

5 0

3 years ago

Suppose heat has caused convection currents to from in a fluid. When the heat source is removed from the fluid, the convection c

RideAnS [48]

The answer to the question is (C)
Hope this helps :)

7 0

3 years ago