constant = 2 and 4
variable = y
Explanation:
A constant is usually a symbol with a known value. In the expression, the constants are 2 and 4.
Their values are accurately known.
A variable is place holder and the value is not known. Variables are not static. They can take different numerical values as defined by an equation:
2cm +4y
the cm is the a unit
2 and 4 are constants
y is a variable that can assume any value
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Answer:
The answer is Producer. Hope this helps!
Answer:
True
Explanation:
Modern safer and cheaper nuclear reactors can not only meet the range of our long term energy demands, they can also fight global warming.
Modern techniques provide ways to reduce radioactive waste amount. "A closed fuel cycle may be switched on for new kinds of nuclear plants. Alternatively, the waste is chemically dissuaded to transform the reusable element into fuel. This implies that nuclear waste would not be buried.
Answer:
20 cm
Explanation:
Given that a ball is released from a vertical height of 20 cm. It rolls down a "perfectly frictionless" ramp and up a similar ramp. What vertical height on the second ramp will the ball reach before it starts to roll back down?
Since it is perfectly frictionless, the Kinetic energy in which the ball is rolling will be equal to the potential energy at the edge of the ramp.
Therefore, the ball will reach 20 cm before it starts to roll back down.
