Caleb likes to take his fork and bang it on different surfaces to make different sounds. Based on Piaget's substages, we can assume that Caleb is: a) In the sensorimotor stage b) In the preoperational stage c) In the concrete operational stage d) In the formal operational stage
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a baseball bat balances 74.8 cm from one end. if an 0.542-kg glove is attached to that end, the balance point moves 25.9 cm toward the glove. calculate the mass of the bat
An object traveling in a straight line accelerates. What will definitely happen due to the acceleration?
A metal object is suspended from a spring scale. The scale reads 930 N when the object is suspended in air, and 731 N when the object is completely submerged in water. Find the volume of the object. The acceleration of gravity is 9.8 m/s 2 . Answer in units of m3 .
You check the weather and find that the winds are coming are coming from the west at 15 miles per hour. This information describes wind's velocity, direction, acceleration, or speed?
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Answer:
-you have to make yourse;f as light as possible so toss your bag, jacket, and shoes.
-Try to take a few steps backwards.
-Keep your arms up and out of the quicksand.
-Try to reach for a branch or person's hand to pull yourself out.
-Take deep breaths.
-Move slowly and deliberately.
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Answer:
its acceleration must be 0.
Explanation:
According the second Newton's law, the net force applied in a object is equal to the mass of the object multiplied by its acceleration:
In this case, the net force is
What makes sense since both forces have the same value and opposite directions.
Since the mass of the object can't be zero, the acceleration is the one that must be 0 in order fulfill the equation of the second newton's law.
Another option is that, since both forces are opposite, the wheelbarrow could be at rest. Though this is correct, this is not always true.
In conclusion, the only statement that always is true about the wheelbarrow's motion is that its acceleration must be 0.
b. compounds
c. homogeneous mixtures
d. colloids
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1 Ampere of current means that if you set up your chair and
stare at the electrons flowing past one point in the circuit, you'll
see 1 coulomb of charge passing that point every second.
How will you recognize 1 coulomb of charge ?
Well, every electron carries the same amount of charge, and
we know how much that is. (Read about the Millikan oil-drop
experiment in 1909.) So we know how many electrons it takes
to carry 1 coulomb of charge past the point you're watching.
All you have to do is count the electrons as they zip past.
Every time you count 6,241,509,343,000,000,000 electrons,
you can tick off 1 coulomb of total charge that they're carrying.
If you reach that count every second, you know the current
passing that point is 1 Ampere.
Answer: amps
Explanation:
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a light wave. All of them are traveling electric and magnetic
fields, not charged particles. The waves and rays have no charge.