Answer:
3.9 m
Explanation:
Assuming no energy losses then all kinetic energy is converted to potential energy
and making h the subject of the formula
where m is the mass of bike rider and bike, v is the velocity, and g is acceleration due to gravity. Taking g as 9.81 m/s2, v as 8.5 m/s then
Answer:
gravity
Explanation:
it pulls everything down and the futher it goes the faster it accelerates gaining lots of speed and gravity is the only force that pulls thangs down
Answer:
1) We are using centrifugal force because of its direction since direction is away from pulley hence it is centrifugal force.
2) Independent variable:Mass
3) Fixed Variable:Spring constant
4) Dependent variable:Centrifugal force.
Answer: m=1.5, n=11
Explanation:
When a number is written in scientific notation (representing the number using powers of base ten) it is expressed so that it contains a digit in the place of the units and all other digits after the decimal point, multiplied by the respective exponent. Then, the significant figures will be the digits that are before the power of ten.
In the case of the following number, which represents the average distance from the Sun to the Earth in meters:
Which expressed in scientific notation as is:
Therefore, and
Lucite has a refractive index of n=1.50. This means that the speed of the light in lucite is decreased according to:
where
is the speed of light in air. Putting the number in the formula, we find that the speed of light in lucite is
The frequency of the light is
, so now we can calculate the wavelength in lucite by using the formula:
<span>Therefore, the correct answer is (2) 393 nm.</span>