Can someone please answer these two science questions. Please don't answer with just anything for the points, I genuinely need the answers. Thanks! :)
Answers
6.
Answer:
45 meters
Explanation:
notice that is you multiply the time with the speed the units cancel to get distance.
therefore
distance=velocity(time)
distance=(3)15
distance =45 meters
7.
Answer:
1. the speed is constant
2. the average speed is .5 m/s
Explanation:
I have attached a graph of the data in excel.
from excel i got the equation of the line to be y=.5x with y being distance and x being time.
the function is a position function so if you take the derivative of it you get the velocity which is .5.
since the derivative is a constant the the speed does not change and the average velocity is the derivative.
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/
c
m
3
.
Part A
Part complete
What is this value in kilograms per cubic meter?
1.35×104
kg/m3
k
g
/
m
3
Answers
If the density of mercury is 13.5 g/cm³ in the gram per centimeter cube unit, then the density of the mercury would be 1.35×10⁴ in the kilograms per cubic meter
What is density?
It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.
By using the above formula for density
ρ = mass / volume
As given in the problem If the density of mercury is 13.5 g/cm³ in the gram per centimeter cube unit then we have to convert its value into kilograms per cubic meter.
1000 grams = 1 kilogram
1 gram = 1/1000 kilograms
=1×10⁻³ kilograms
10⁶ cubic centimeter = 1 cubic meter
1 cubic centimeter = 1/10⁶ cubic meter
= 1× 10⁻⁶ cubic meter
Given the density of the mercury 13.5 g/cm³
13.5 g/cm³ = 13.5 ×10⁻³ kilograms / 1× 10⁻⁶ cubic meter
= 1.35×10⁴ kilograms / cubic meter
Thus, we converted the density of mercury is 13.5 g/cm³ into 1.35×10⁴ kilograms / cubic meter
To learn more about density from here, refer to the link;
#SPJ2
Answer:
DO IY.T
Explanation:
Answers
To make gravity smaller, decrease mass or increase distance.
To make gravity bigger, increase mass or decrease distance.
You can increase the forces of gravity between you and,
let's say, a planet, in two ways.
Way #1:
Increase your mass.
(Eat or drink more.
Fill your pockets with rocks.
Put on a heavy coat or space suit.)
Way #2:
Get closer to the center of the planet.
(That only works down to the planet's surface, but
it stops working if you go below the surface.)
To decrease the forces of gravity, do exactly the opposite:
-- lose weight
-- get farther away from the object that gravity is attracting you to .
Also, don't forget:
The forces of gravity always work both ways.
The less the planet pulls on you, the less you pull on the planet.
The harder the planet pulls on you, the harder you pull on the planet.
Answers
Answer:c is the answer every 2 hours A is just plain no B four hours is too long and D is a no you need to rest
Explanation:
Answer:
C
Explanation:
Answers
1). It has oxygen in it, of which we need a steady supply
in order to stay alive.
2). It has pressure, which prevents us from boiling away
and blowing up like balloons.
Answers
Answer:
The law of conservation of energy applies to eating your favorite food in that the energy contained in the food is being converted to energy usable for the body system after the final digestion(Glucose or simple sugar, amino acid, etc)
Examples of transformation of energy include
(1) Transformation from Chemical energy in battery to light energy in bulb
(2) Transformation of Electrical energy to thermal/Heat energy in electric stove.
Explanation:
The law of conservation of energy states that energy can neither be created or distroy. It can only by converted from one form to another.