Q3. A bridge is built without expansion gaps.
Explain what could happen to the bridge if the temperature became:

a) much hotter than the day it was built.
b) much colder than the day it was built.

Use the chemical reaction to answer the question.

The blue mass in the image is 10kg.


The red mass in the image is 10kg.


The blue mass is currently 4 meters away from the red mass.


If we change each mass to 20kg, what will happen to the gravitational force each mass puts on the other?? You have to pick a answer through A,B,C! The force of gravity will increase as the masses increase.



The force of gravity will not change as the masses increase.



The force of gravity will decrease as the masses increase.

True or False this is a black hole 75 points + Brainliests

Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics apply to only that topic.

Overlapping circles are labeled solid on top, liquid at right, gas at left, with the intersection of all three labeled state of matter.
Which Venn diagram accurately describes what characteristics of solids, liquids, and gasses could be added to this diagram?

Overlapping circles are labeled definite shape most dense at top, mid-level density at right, definite volume least dense at left, with the intersection labeled state of matter.
Overlapping circles are labeled definite shape most dense at top, mid-level density at right, least dense at left, with the intersection of all three labeled state of matter. The intersection of the top and right circles is labeled definite volume.
Overlapping circles are labeled definite shape most dense at top, definite volume mid-level density at right, least dense at left, with the intersection of all three labeled state of matter. The intersection of the left and right circles is labeled definite shape.
Overlapping circles are labeled definite shape least dense at top, definite mid-level density at right, most dense at left, with the intersection of all three labeled state of matter. The intersection of the left and right circles is labeled definite shape.

What are some of the landforms rovers have found on Mars that show it was once an active place?

PLZ ANSWER QUICKLY
Janice has just measured the density of an object. Which value is possible? (Density: D = )

A.–1 g/cm3
B.4 m/s
C.–3 m/s
D.6 g/cm3

Rahul sees a flock of birds. He watches as the flying birds land in neat little rows on several power lines. Which change of state does the motion of the birds most closely model?

melting
vaporization
deposition
sublimation

Follow these steps to compare pieces of sticky tape that have the same charge:

Tear off two pieces of clear sticky tape that are about 15 cm (6 inches) long. Stick the two pieces of tape side by side on the tabletop.
Tear off two more pieces of tape, and fold under a half inch of each piece as shown in the side view. This tab makes them easy to pull off later on. Stick these pieces of tape onto the pieces already on the table and smooth them down.
tape folded to create a tab
Using both hands, grab the tabs of the two top pieces of tape. Carefully pull both top pieces of tape off the bottom pieces. Turn the non-sticky sides of the tape toward each other.
What do you observe? If there’s an interaction, explain whether the tape pieces attract or repel each other.

Two laws are described below:

Law A: It can be broken under certain conditions.
Law B: It does not focus on a natural phenomenon.

Based on these characteristics, what can you conclude about Law A and Law B?

Both Law A and Law B are societal laws.
Both Law A and Law B are scientific laws.
Law A is a scientific law and Law B is a societal law.
Law A is a societal law and Law B is a scientific law.

A group of students is investigating whether the smoothness of a surface affects the force of friction. Each student pushes a book on two different surfaces. One surface is ice and the other is concrete. The distance traveled by the book on each surface is shown.


Experimental Observations
Student 1 Student 2 Student 3 Student 4
Distance traveled by book on ice 23 cm 21 cm 24 cm 22 cm
Distance traveled by book on concrete 15 cm 18 cm 16 cm 17 cm


Based on the table, which conclusion is correct about the average distance traveled?
A. It is less on concrete.
B.It is greater on concrete.
C.It is less when the book is pushed harder.
D. It is independent of the type of surface.

urgenttt helpppp!!!!!!!!!!!!!!!!!!!!!!!!
a studentistrying to design an artificial eardrum for their science fair project. they made their eardrum hollow to cut down on cost and weight. when they tested how long it took to test the subject to hear deep, they found that their control ear drum made out of wood did better than their created one. the temperature that day wa 98 fahrenheit.
determine which statement supports the students findings.
a.the created eardrum performed worst because sound travels faster in solids due to large distance between the particals
b. the created eardrum performed worst because sound travels faster in solids due to the small distance between the particles.
c.the created eardrum performed worst because sound travels slower in air due to the small distance between the particles.
d.the created eardrum performed worst because sound travels slower through air in high temperatures due to the particles moving slower.

( please just tell me the formula to use to solve it ) A hockey puck has a coefficient of kinetic friction of μk = .10. If the puck feels a normal force (FN) of 5 N, what is the frictional force that acts on the puck?

IF YOU PASS SCIENCE TEST HELP ME PLEASE!!!
refer to the data table below. According to the data, what conclusion can be drawn from the data table below?
A. sound doesn't travel through human beings at all
B. sound travels through human beings faster than through cork.
C. sound travels through human beings slower than through a cork
D. sound travels through human being

Use the chemical reaction to answer the question.

Which contributions did Johannes Kepler make? Check all that apply.

Which contributions did Johannes Kepler make? Check all that apply.

He revived Aristotle’s model of the solar system.
He solved Ptolemy’s model by proving elliptical orbits.
He proved Galileo’s calculations were incorrect.
He determined that planets move faster when closer to the Sun.
He discovered laws of planetary motion.

PLEASE HELP! 20 POINTS!


Amy and Chris took different routes to travel from Point A to Point E. Amy took the route along A, B, C, D, and E and reached the destination in 2 hours. Chris took the route along A, G, F, and E and reached the destination in 3 hours. Their routes are shown.



Which conclusion is correct?


Amy's average speed is twice Chris's average speed.

Chris's average speed is twice Amy's average speed.

Amy's average speed is equal to Chris's average speed.

Chris's average speed is three times Amy's average speed.

How does the agricultural activity most likely affect the surface water of the area?

A lever has an input arm 50 centimeters long and an output arm 40 centimeters long. What is the mechanical advantage of the lever? (MA=Input distance / Output distance) a 2.0 b 1.25 c 1 d 0.8

Where in the eye are rods and cones located?

cornea

retina

lens

iris


WILL GIVE BRAINLIEST!

Can someone help me


Which of the following would a good frame of reference?

A) the moon

B) a tree

C) a rabbit

D) your sister while she rides her bike