Eric threw a baseball 20 meters in 0.5 seconds. What was the average speed of the baseball to the nearest hundredths of a m/sec.

Answer:

40m/sec

Explanation:

speed = distance ÷ time

speed = 20 ÷ 0.5

speed = 40 m/sec

Answer:

40 m/s

Explanation:

Speed or velocity is distance over time. Therefore,

20 meters/0.5 seconds

= 40 m/s

In this experiment you added more coils to pick up more __In this experiment you added more coils to pick up more __

A. The girl kicks a ball with a force of 10 N, what is the size of the reaction force?

B. The baseball player hits the ball with a force of 20 N, what is the size of the reaction force?

C. The rockets thrusts push down with a force of 1,000 N, what is the size of the reaction force?

D. You blow a balloon up and let it go. Air pushes out to the left but the balloon moves to the right. Use Newton's Third Law to explain why this happens.

Golf Skills pls help mee

Dr. Shapiro has asked you to analyze the Magnetic Field Line diagrams and determine whether the data supports the claim that the magnets in the launcher were misaligned during the Tuesday test launch, causing it to be slower than expected.


Explain how the magnetic field line data supports or refutes the claim that the launcher and spacecraft magnets were misaligned in the Tuesday launch.


plz, help!!!

which planet does the sun have the strongest gravitational pull

This one is an "essay" answer. I only need 2+ sentences though! WILL GIVE BRAINLIEST TO BEST ANSWER! Observe the data chart below and explain how the mass of each ball affects its motion.


Baseball Bowling Ball Beach Ball Tennis Ball
400 grams 900 grams 10 grams 60 grams

Question 4 (ID=54266)
Which of these would be different for an object if measured on the Earth and on the Moon?

A: Mass Strike Reset
B: Weight Strike Reset
C: Volume Strike Reset
D: Density Strike Reset
IM BEGGING IM BEING AND GETTING 12 MOR MINUTES

PLS HELP ASAP PLEASE PLEASE PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

The smallest particle in the universe?
A grain of salt is small, but you can always make it smaller. Imagine cutting that grain of salt into two pieces. Now cut it again and again. Soon, you can't see the smaller pieces with your eyes, but the salt is still there. You finally cut the salt down to the very tiniest piece of salt there is. But even that tiny piece contains smaller particles. Those tiny particles are atoms. Atoms make up everything in the visible universe from galaxies to even yourself. Atoms are so incredibly small that you could line up 50 million in a row and the line would only be about 1 centimeter (less than half an inch) long. Still, scientists have found things that are smaller than atoms. And they are looking for more. If they find the smallest things in the universe, they'll better understand how the universe actually works. But it took some time before people discovered the world of the truly small. The Universe Gets Smaller… Grains of sand or dust were once the smallest things actually seen on Earth. By the 1600s, several inventions opened up brand new worlds to curious minds. These included lenses that could make things look clearer and bigger. Another early invention was the microscope. Some people used the microscope to observe and write about the tiniest things they could see. In the 1670s, a Dutch lens maker named Antonie van Leeuwenhoek built himself a microscope. It magnified things more than 200 times. Van Leeuwenhoek discovered a world of tiny living things that he called tiny animals. Van Leeuwenhoek figured they were about 1/38th the size of a grain of sand. Today we know that what he saw were bacteria, the smallest living things on Earth. But atoms are much, much smaller. You can't see atoms with an ordinary microscope.
…And Smaller The idea that tiny, unbreakable particles make up everything that exists is more than 2000 years old. The Greek thinker Democritus called these particles "atomos." This is the Greek word for "uncuttable." Scientists didn't return to the idea of atoms until the 1800s. At first, scientists thought atoms were tiny balls with some electrical charges inside. They also thought atoms were the smallest particles that existed. But scientists soon began to wonder if atoms might be made of smaller things. In 1897, British scientist J. J. Thomson proved that they were. He ran experiments and discovered the electron. This tiny particle has a negative electrical charge and whizzes around inside the atom. A graphic showing the basic atomic structure of three elements, hydrogen, helium and oxygen. Protons, neutrons and electrons are shown.Zoom-in Different elements have different numbers of protons, neutrons, and electrons. The Smallest Things—So Far Scientists were soon discovering more inside the atom. Hiding in the atom's center is the tiny nucleus. (If an atom were the size of a racetrack, the nucleus would be about the size of a pea in the middle.) The nucleus contains two types of particles: protons and neutrons. Protons have a positive electrical charge while neutrons have no charge. They contain even tinier particles called quarks that are so unimaginably small that they have no internal structure. Quarks and electrons are the smallest particles found so far. Scientists call the smallest things they've found fundamental particles. Fundamental particles do not contain any smaller particles. Scientists use huge machines called particle accelerators to learn more about particles. These machines speed up particles so they can smash into each other. Then the scientists track the paths the particles leave when they hit. Scientists use accelerators to discover new particles. Many scientists wonder why there are so many particles at all. Shouldn't there be just one "smallest thing" instead of many? The search goes on for the particle that is the one true building block of everything in the universe

Which sentence from the article helps the reader to understand that the nucleus of an atom is very small?
A Still, scientists have found things that are smaller than atoms
B The idea that tiny, unbreakable particles make up everything that exists is more than 2,000 years old
C Hiding in the atom's center is the tiny nucleus
D (If an atom were the size of a racetrack, the nucleus would be about the size of a pea in the middle.)
Read the paragraph below from the section "... And Smaller."
But scientists soon began to wonder if atoms might be made of smaller things. In 1897, British scientist J. J. Thomson proved that they were. He ran experiments and discovered the electron. This tiny particle has a negative electrical charge and whizzes around inside the atom
What inference can the reader make based on this paragraph?
A Electrons are the made up of even smaller particles
B Other scientists had questions about Thomson’s experiments
C Thomson could not see electrons but found signs they existed
D Thomson discovered electrons while looking through a microscope