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Physics
Physics
High School
If a red blood cell with a 0.5M salt concentration is placed into a 2M salt solution, what will happen to the blood cell?
Physics
College
the neuron is considered a (a. Cell. (B.artery. (C. Vein
Physics
High School
A racehorse coming out of the gate accelerates from rest to a velocity of 12.0m/s due west in 2.30 s. What is its average acceleration?27.6 m/s^25.22 m/s^2-5.22 m/s^2-27.6 m/s^2-0.19 m/s^2O 0.19 m/s^2
Physics
Middle School
Summarize what you learned this week about the electromagnetic spectrumHINT: What is it? What does it organize? How do we use these EM waves in our lives?
Physics
College
In a spy movie, the hero, James, stands on a scale that is positioned horizontally on the floor. It registers his weight as 810 N . Unknown to our hero, the floor is actually a trap door, and when the door suddenly disappears, James and the scale fall at the acceleration of gravity, down towards an unknown fate. As James falls, he looks at the scale to see his weight. What does he see
Physics
High School
explain why you are always accelerating when you ride a merry go round even though the speed of the merry go round does not change?
Physics
Middle School
HELP FAST ONLY CORRECT ANSWERS 15 PTResearch the Moon to understand why only one side of the Moon is observable from Earth. If this was the case with the Earth-Sun system, what would be Earths period of rotation?
Physics
High School
A jet accelerates from rest down a runway at 1.75 m/s2 for a distance of 1500 m beforetakeoff.a. How fast is the plane moving at takeoff?b. How long does it take the plane to travel down the runway?
Physics
High School
The sphere that refers to Earth's water is called what?
Physics
High School
How are Covalent bonds formed?
Physics
High School
For his science project, Austin wants to determine if the pH of standing rainwater changes over time. He collects rainwater and distributes it evenly in 5 jars and places them all indoors in a spot that does not receive a lot of sunlight to limit evaporation. Using a pH testing kit, he measures the pH of the water in the first jar on the 4th day, second jar on the 8th day, third jar on the 12th day, fourth jar on the 16th day and fifth jar on the 20th day. What is the independent, or manipulated, variable in Austin's experiment?
Physics
High School
What theory explains the main cause of mountain building, earthquakes, and volcanic eruptions on Earth?Group of answer choicesthe scientific theory of Earth's shiftthe scientific theory of magnetismthe scientific theory of Earth's layersthe scientific theory of plate tectonics
Physics
College
The interaction between electrical energy and magnetism has been an importanttopic in 20th century science, Which term describes this interaction?
Physics
College
The precision value of measuring tape is1)0.1cm2)0.1mm3)1cm4)0.01cm
Physics
High School
What is the displacement of an object that moves from the origin to a position at - 12m
Physics
College
A single-turn circular loop of radius 9.4 cm is to produce a field at its center that will just cancel the earth's field of magnitude 0.7 G directed at 70degrees below the horizontal north direction. Find the current in the loop.
Physics
High School
For the first 10 seconds a squirrel runs 3 m/s to look for an acorn. The next 5 seconds he eats an acorn that he finds. Afterwards the squirrel runs 2 m/s back to where he started. (A) How long does it take for the squirrel to get back to where he started?
Physics
High School
What is the acceleration of gravity if you are on planet earth? *
Physics
High School
How many stars are contained in the milking way galaxy A) 0 b)1 c) billions d)infinite
Physics
High School
HEY CAN ANYONE PLS ANSWER THESE QUESTION!!!!!
Physics
College
A boy whirls a ball on a string in a horizontal circle of radius 1 m. How many revolutions per minute must the ball make if its acceleration towards the center of the circle is to have the same magnitude as the acceleration due to gravity
Physics
College
A 1870 kg car traveling at 13.5 m/s collides with a 2970 kg car that is initally at rest at a stoplight. The cars stick together and move 1.93 m before friction causes them to stop. Determine the coefficient of kinetic friction between the cars and the road, assuming that the negative acceleration is constant and all wheels on both cars lock at the time of impact.
Physics
High School
What was not a positive benefit of Spanish exploration in Oklahoma?A.Future interactions between the Spanish and French would have a buffer zone.B.Historians gained a written account of Oklahoma in the 15th and 16th centuries.C.Geographers gained new knowledge about the continent of North America.D.The Spanish and American Indian tribes enjoyed exclusively friendly relations.
Physics
College
Chris races his Audi north down a road for 1000 meters in 20 seconds, what is his velocity?
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