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aliya0001 [1]
2 years ago
6

Kate gathered three boxes of the same size made of different materials: glass, clear plastic, and aluminum painted black. she pl

aced them on a windowsill in the sun for an hour and then measured the warmth of the air in the box. in this experiment, the time of the hour is a(n)______.
A. constant
B. independent variable
C. dependent variable
D. control
Physics
2 answers:
schepotkina [342]2 years ago
8 0
Im pretty sure its B independent variable
Anika [276]2 years ago
8 0

Answer: Independent variable

Explanation:

The time for which the different material boxes are placed in the sunlight in order to measure the warmth inside each box is independent variable.

Independent variable can be defined as the factor which can be changed based on the experiment. It does not depends on any factor.

The dependent variable depends on the independent variable and based on this the hypothesis is either rejected or accepted.

Hence, the correct answer is option B

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What does bubble universe mean
s344n2d4d5 [400]

Answer:

<h3>Our universe may live in one bubble that is sitting in a network of bubble universes in space. ... The concept is known as a "parallel universe," and is a facet of the astronomical theory of the multiverse. The idea is pervasive in comic books, video games, television and movies.</h3>
5 0
2 years ago
To which group/family does each of these belong? A. Sulfur _________ B. Sodium _________ C. Argon _________ D. Silicon _________
ArbitrLikvidat [17]

Answer:

A. Sulfur _________ group 16 chalcogens

B. Sodium _________ group 1 alkali metals

C. Argon _________ group 18 noble gases

D. Silicon _________ group 14 carbon family

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7 0
2 years ago
A truck loaded with sand accelerates along a highway. The driving force on the truck remains constant. What happens to the accel
pickupchik [31]

Answer:

Acceleration will increase.

Explanation:

The relation between force, mass and acceleration according to the Newton's second law of motion is given as:

F = ma

We are given that the driving force on the truck remains constant, so F is constant here. We can rewrite the above equation as:

a=\frac{F}{m}

Since, F is constant, the acceleration of the truck is inversely proportional to the mass.

There is a hole at the bottom of the truck through which the sand is being lost at a constant rate. Since, the sand is being lost, the overall mass of the truck is being reduced.

Since, the acceleration of the truck is inversely proportional to the mass, the reduced mass will result in an increased acceleration.

So, the acceleration of the truck will increase.

4 0
3 years ago
Match the following:
Art [367]

Answer:

1) Tailored software  Library management system

2) Utility software Scan viruses

3) Operating system Used to coordinate the hardware of the computer

4) Packaged software set of programs Microsoft office

Explanation:

1) A tailored software, also known as a custom software, is one that is designed and tailor-made only for a particular organisation

2) A utility software is a computer maintenance and analysis software used to enable proper functioning of the computer by performing restorative and maintenance tasks

3) Operating system software

The operating system software controls the operation of the computer hardware within the system and enables the operation of other programs in the computer

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8 0
3 years ago
If an open pipe of length vibrates in fundamental mode, then pressure variation is maximum
KIM [24]

Answer:

(B) at the middle of the pipe

Explanation:

In the case of an open pipe which vibrates in fundamental mode, an anti-node is formed at the middle of the pipe, here the amplitude of the wave is maximum. Hence, the pressure variation is also maximum at the middle.

8 0
3 years ago
Read 2 more answers
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