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mart [117]
3 years ago
13

Who was the first russian to orbit the earth

Physics
2 answers:
viva [34]3 years ago
8 0
The first Russian to orbit the earth was Yuri Gagarin
Elan Coil [88]3 years ago
5 0

Yuri (Alekseyevich) Gagarin

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Organism undergo constant chemical changes as they maintain an internal balance known as?
Aleks04 [339]
The answer is homeostasis.
3 0
4 years ago
Read 2 more answers
Which of the following does not affect the rate of solubility
lions [1.4K]

Answer:

Weight

Explanation:

Weight does not have any effect on solutbility.

For gases their solubility relies a lot on pressure exerted. At higher presure, gases dissolves more readily than ever. The relationship between solubility and pressure is a direct one.

Higher surface area facilitates the rate of a reaction and in essence, helps to dissolve more solute. Surface area exposes a solute to the action of more solvent which would aid solutbility.

Temperature has a high effect on solubility. An increase in temperature would make more solute dissolve in it.

3 0
4 years ago
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A motor boat is traveling east with a velocity of 7.3 meter/seconds. Its experiences a current of 0.34 meters/seconds from the e
andreev551 [17]
Since they're going in the same direction, just add the velocities together.

7.3 m/s + 0.34 m/s = 7.64m/s

3 0
3 years ago
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Two identical conducting spheres each having a radius of 0.500 cm are connected by a light, 1.90-m-long conducting wire. A charg
Ivan

Answer: 4.19 N

Explanation: In order to determinate the tension applied on the wire we have to calculate the electric force between the conductor spheres connected by the wire.

As the wire is a conductor the spheres are at same potential so we have:

V1=V2

V1=k*Q1/r1 and V2=k*Q2/r2

where r1=r2, then

Q1=Q2

so the electric force is given by:

F=k*Q^2/d^2  where d is the distance between the spheres.

Finally replacing the values,  we have

F=9*10^9(41*10^-6)^2/(1.9)^2= 4.19 N

8 0
3 years ago
A truck passes point A on a straight level road with a constant velocity of 12 m/s. At the same instant, an automobile starts fr
REY [17]

Answer:

t = 13.3 s

Explanation:

Let the car will overtake the truck after time "t" seconds

so here we can say that after time "t" seconds the distance covered by the car will be same as that of distance covered by truck

So we have

d_{car} = d_{truck}

so we have

d_{truck} = 12 t

d_{car} = \frac{1}{2}(1.8 m/s^2) t^2

so now we have

12 t = 0.9 t^2

t = 13.3 s

7 0
3 years ago
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