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3 years ago

When developing an experimental design, which action could a scientist take to improve the quality of the result?

Physics

1 answer:

worty [1.4K]3 years ago

5 0

Answer: You can Identify any biases about the answer to the scientific question.

Explanation:

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A basketball is resting on the ground.

kakasveta [241]

Answer:

Explanation:

there is no net force on the basketball

8 0

3 years ago

Two masses are joined by a mass less string. A 33-N force applied vertically to the upper mass gives the system a constant upwar

lisov135 [29]

Lower mass: 1.20 kg, upper mass: 1.28 kg

Explanation:

In order to solve the problem, we consider the forces acting on the upper mass only first.

The upper mass is acted upon three forces:

The applied force $F_a=33 N$ , upward
The weight of the mass itself, $m_u g$ , where $m_u$ is the upper mass and $g=9.8 m/s^2$ is the acceleration of gravity, downward
The tension in the string, $T=16 N$ , downward

Therefore, the equation of the forces for the upper mass is:

$F_a - m_u g - T = m_u a$

where

$a=3.5 m/s^2$ is the acceleration (upward)

Solving for $m_u$ ,

$m_u = \frac{F_a-T}{a+g}=\frac{33-16}{3.5+9.8}=1.28 kg$

Now we can find the lower mass by considering the forces acting on it:

The tension in the string, T = 16 N, upward
The weight of the mass itself, $m_L g$ , where $m_L$ is the lower mass, downward

So the equation of the forces is

$T-m_L g = m_L a$

And solving for the mass,

$m_L = \frac{T}{a+g}=\frac{16}{3.5+9.8}=1.20 kg$

Learn more about acceleration and forces:

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#LearnwithBrainly

7 0

3 years ago

8. A receptacle, plug, or any other electrical device whose design limits the ability of an electrician to come in contact with

yaroslaw [1]

Recessed is the correct answer

4 0

4 years ago

Morse code and string phone cup

polet [3.4K]

Answer:

Following are the responses to the given question:

Explanation:

Following are the difference in the speed and accuracy:

The biggest difference was its tone between both the cup method as well as the Morse code. One should talk using cup system and sequence system and let its covering be understood in Morse code, just a series of beeps weren’t tangible... Secondly, a method of cup involves a range string. Rukun Negara is often distributed by cable, but this is a greater range. It reaches concurrently in those other areas.

In the case of using the string method for the block, its distance and stiffness of the string are limited and the barriers are eliminated. It will certainly be convenient and clearer if one utilizes Sign language.

If two experts are acting like such a machine on both sides, their information between both the 2 persons is smoother and quicker as they will not have to wait for data from a third person which may create another pause at the time.

Morse code is faster, eventually. For some very small periods when sensitive information is not transmitted, strings or cup methods must be reserved.

8 0

3 years ago

Anyones good in gr5 science pls help me

oee [108]

Answer:

1. A

sound can't travel through vacuum only

6 0

3 years ago