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3 years ago

Besides storage, what does a vacuole provide in a plant cell?

1 answer:

3 0

It regulates water content of cells, it gives pigment to some fruit and flowers and it provides turgidity to plant cells

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5. The table shows the total vertical distance a free-falling body travels for each second it falls. About how far does the free

ratelena [41]

Answer:

a. 44 m

Explanation:

We don't have the table but we can still answer since the motion is a free-fall motion.

First of all, we calculate the velocity of the body at time t = 4 s, with the equation

$u'=u+gt$

where

u = 0 is the initial velocity

g = 9.8 m/s^2 is the acceleration of gravity (we take downward as positive direction)

t is the time

Using t = 4 s,

$u'=0+(9.8)(4)=39.2 m/s$

Now we can calculate the distance covered during the time t = 4 s and t = 5 s using the other suvat equation

$s=u'\Delta t+\frac{1}{2}g\Delta t^2$

where

$\Delta t = 5-4=1s$ is the time interval we are considering. Substituting values,

$s=(39.2)(1)+\frac{1}{2}(9.8)(1)^2=44 m$

4 0

3 years ago

Can sb try and do this I’m a mother trying to do school again❤️

Reika [66]

Answer:

dont do it to me i wont do it to you :)

Explanation:

5 0

3 years ago

Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a m

pav-90 [236]

Explanation:

It is given that,

Mass, $M=3\times 10^{11}\ kg$

Acceleration due to gravity, $g=9.8\ m/s^2$

Acceleration due to gravity is given by :

$g=\dfrac{GM}{r^2}$

r = distance from head

$r=\sqrt{\dfrac{GM}{g}}$

$r=\sqrt{\dfrac{6.67\times 10^{-11}\times 3\times 10^{11}}{9.8}}$

r = 1.42 m

So, at the distance of 1.42 meters from the head its gravitational pull on you match that of Earth's. Hence, this is the required solution.

5 0

3 years ago

What affect would using a 12V car battery have on the operation of your circuit? (Do not try this.) What would happen to the cur

k0ka [10]

Answer:

Incomplete question

This is the completed question

If the resistor in the circuit had a larger resistance then the current would be then have to be proportionally smaller. Because the batteries each give off 1.5 volts then the current would have to be the variable that would change. What affect would using a 12V car battery have on the operation of your circuit? (Do not try this.) What would happen to the current? What would happen to the resistor?

Explanation:

Using ohms law as our basis

Ohms law state that, the voltage in an ohmic conductor is directly proportional to the current

V∝I

Resistance is the constant of proportionality

Then

V=iR

Since we want a relationship between current and resistance.

then, I=V/R

So, current is inversely proportional to Resistance

as the current increase the resistance reduce and as the current reduces the resistance increases.

a. So, increasing the voltage from 1.5V to 12V increases the current In the circuit because voltage Is directly proportional to I.

From ohms law

V=iR

When v =1.5V

I=1.5/R

When V increase to 12V

I=12/R

I.e, it increases by a factor of 8. Eight times it's initial value

b. Now, the resistance in the circuit is the constant of proportionality and it doesn't change in a given circuit expect when using a variable resistoa r like rheostat.

6 0

3 years ago

Which is the force that results from use of a machine?

Goshia [24]

Answer:

D. Output force

Explanation:

The input force is the effort used to run the machine and this results in an output force.

3 0

2 years ago