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Kazeer [188]
4 years ago
6

A student wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. To test this hypothesis, the stu

dent put the same amount of grass seed in 3 containers with the same type of soil. The student measured the growth at the end of the week. All plants received equal amounts of water and sunlight. If you were asked to graph this data, what would you place on the x-axis?
Physics
1 answer:
Sophie [7]4 years ago
7 0
As the student is trying to see the effects of fertilizer on the growth rate of seeds, then the variable on the x-axis should be the independent variable, which is the amount of fertilizer placed. The growth depends on the fertilizer, so it is the dependent variable.
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Two metal plates 15mm apart have a potential difference of 750v between them. The force on a small charged sphere placed between
Romashka [77]

Answer:

50,000 V/m

Explanation:

The electric field between two charged metal plates is uniform.

The relationship between potential difference and electric field strength for a uniform field is given by the equation

\Delta V=Ed

where

\Delta V is the potential difference

E is the magnitude of the electric field

d is the  distance between the plates

In this problem, we have:

\Delta V=750 V is the potential difference between the plates

d = 15 mm = 0.015 m is the distance between the plates

Therefore, rearranging the equation we find the strength of the electric field:

E=\frac{\Delta V}{d}=\frac{750}{0.015}=50,000 V/m

6 0
4 years ago
The volume of vessel is 6 litres. convert it into ml​
dalvyx [7]
6000 ml
There are 1000ml in one liter
5 0
3 years ago
Why does a batsman striking a cricket ball follow through?​
Over [174]

A good follow-through maintains flow in the motion. It is to hit 'smooth', rather than to hit 'hard'. It is to maintain a certain 'looseness' in the swing, rather than 'tension' or 'over-hitting' the ball with too much power.

5 0
3 years ago
An object at rest does not _____ and an object in motion does not _____, unless an _____ force acts upon it
mel-nik [20]

Answer:

An object at rest does not move and an object in motion does not change its velocity, unless an external force acts upon it

Explanation:

This statement is also known as Newton's first law, or law of  inertia.

It states that the state of motion of an object can be changed only if there is an external force (different from zero) acting on it: therefore

- If an object is at rest, it will remain at rest if there is no force acting on it

- If an object is moving, it will continue moving at constant velocity if there is no force acting on it

This phenomenon can be also understood by looking at Newton's second law:

F = ma

where

F is the net force on an object

m is the mass

a is the acceleration

If the net force is zero, F = 0, the acceleration of the object is also zero, a = 0: therefore, the velocity of the object does not change, and it will continue moving at the same velocity (which can be zero, if the object was at rest).

5 0
3 years ago
Qualitative observation requires numerous data to discribe research A .true B. False
saveliy_v [14]

Answer:

true

Explanation:

Qualitative Observation is the research process of using subjective methodologies to gather information or data. Since the focus on qualitative observation is to equate quality differences, it is a lot more time consuming than quantitative observation but the sample size used is much smaller and the research is extensive and a lot more personal.

8 0
3 years ago
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