Answer:
985 kg/m3
Explanation:
The average density of the human body is 985 kg/m3 k g / m 3 , and the typical density of seawater is about 1020 kg/m3 k g / m 3 .
Explanation:
the worldwide human population density is around 7,500,000,000 ÷ 510,000,000 = 14.7 per km2 (38 per sq. mi.). If only the Earth's land area of 150,000,000 km2 (58,000,000 sq. mi.) is taken into account, then human population density is 50 per km2 (129 per sq.
What units are used to measure mass and weight?
O Mass and weight are measured in kilograms. O Mass and weight are measured in newtons. Mass is measured in kilograms, and weight is measured in newtons.
O Mass is measured in newtons, and weight is measured in kilograms.
Answer:
mass is measured in kilograms and weight is measured in newtons
Explanation:
The world's longest continuous mountain ridge is under the ocean.
True
False
Please hurry!!!
Answer:
True
Explanation:
__________ is the theory that living things come from other living things.
A.
spontaneous generation
B.
evolution
C.
Darwinism
D.
cell theory
Answer:
A.spontaneous generation
A star switches from a main sequence star to a red giant star when runs out and stops.
Answer:
But once the core runs out of hydrogen, the star starts to contract again briefly, until a shell of hydrogen around the core becomes hot enough to fuse into helium. When this happens, the radiation pushes the outer layers of the star far out into space, turning the star into a red giant
Explanation:
Correct?
Please solve this worksheet for me It’s very important please don’t write unnecessary things or else I’ll report please help me i request
Answer:
1. 231.25 mL
2. 218.75 kPa
3. 6.21 L
4. 427.5 mL
5. 83.01 mL
6. 307.6 mL
7. 1.15 L
Explanation:
Boyle's law equation is used in this questions as follows;
P1V1 = P2V2
Where;
P1 = initial pressure
P2 = final pressure
V1 = initial volume
V2 = final volume
Please find the solutions to each subquestion as an attachment
Your spaceship has run out of fuel and comes to a halt halfway between the earth and the moon. Will you and your spaceship (a combined mass of 5000 kg) fall towards the moon or towards the earth? Show calculations to support your answer.
Answer:
moon
Explanation:
cause yes
MIDDLE SCHOOL: What are the three types of energy used when cleaning? (Please write them in order of occurrence)
Answer:
Chemical, mechanical, thermal i guess
Which of the following is one dimensional
A.
acceleration
B.
velocity
C.
both velocity and acceleration
D.
speed
Answer:
both velocity and acceleration
Explanation:
answer May be 3
What does the object below model?
O A. The heart
O B. The skeletal system
C. The brain
O D. The lungs
Answer: c
Explanation: it is c because i used my brain to answer it
Answer: The Brain
Explanation:
Its the brain
Question 7 (5 points)
(03.06 LC)
Losing
or fewer per week is a healthy rate of weight loss. (5 points)
Answer:
true?
Explanation:
Does Sam's story give you any idea for how two taster parents might have a child who is a non-taster
Answer:
if sams answer is yes that they can have a child who is a non-taster then your answer is yes
Explanation:
if both parents are heterozygotes, 25% of their children can be nontaster.
Continue taking reading until the water starts to be boil
Answer:
pogggs
Explanation:
A girl is walking a dog. The tension force applied to the dog is 20 N. If the mass of the dog is 25
kg.
For this problem, you will only be concerned with the geometric aspects of thin-film interference, so ignore phase shifts caused by reflection from a medium with higher index of refraction. (Because of the structure of a butterfly's wings, such phase shifts do not contribute much to what you actually see when you look at the butterfly.) Part A Assume that light is incident normal to the surface of a film of thickness d. How much farther does the light reflected from the back surface travel than the light reflected from the front surface
Answer:
Λ = 2 t
Explanation:
This is a problem is interference by reflection, where it is requested not to take into account the changes of phase and change in the wavelength within the film
λₙ = λ₀ / n
When the wave enters the film, it must reach the end of the film, be reflected and reach the initial surface, therefore the total length is
d = 2 t
where t is the thickness of the film, because the film is perpendicular to the surface
therefore the difference in optical path between the reflected ray on the surface and the end film is
Λ = 2 t
If a car travels 30 miles in 5 hours, how many miles per hour is the car traveling?
((Please help I need this question in no less than 20 minutes!!!))
Answer:
6 mph
Explanation:
30 miles/5 hours = 6 mph
Which one of the following is NOT acceleration
A.
a change in mass
B.
a change in direction
C.
an increase in velocity
D.
a decrease in velocity
Answer:
change in direction
Explanation:
ans maybe correct
The light is most intense where it strikes Earth _______ to its surface.
Answer: The sun's rays strike Earth's surface most directly at the equator. This focuses the rays on a small area. Because the rays hit more directly, the area is heated more.
The light is most intense where it strikes Earth's surface most directly at the equator
The sun's rays strike Earth's surface most directly at the equator. The rays are focused on a narrow area as a result of this. The area is heated more because the sunlight touch it more directly.The incoming solar radiation is more direct (almost perpendicular or closer to a [tex]90[/tex] degree angle) when the sun's rays contact the Earth's surface near the equator. As a result, solar energy is focused over a smaller surface area, causing temperatures to rise.For more information:
https://brainly.com/question/23286357?referrer=searchResults
A car traveling at 65 mph is an example of its
Answer:
Speed
Explanation:
The distance traveled by an object in a unit of time is speed
Which benefit is provided by good flexibility?
A. less risk of injury
B. longer endurance
C. muscle growth
D. greater strength
The load (mass) that a moving wagon was carrying was doubled but the force pulling the load was kept the same. Which of the following is the best assumption about the object’s acceleration?
A The object will have no acceleration.
B The object will travel at a constant speed.
C The object’s rate of acceleration will increase.
D The object’s rate of acceleration will decrease.
Answer: B
Explanation: I answered this question already at my school.
I lift a 20kg ball up 2.5 meters off the ground on Earth.
-Earth’s gravitational acceleration is about 9.8 m/s2.
How much gravitational potential energy does the ball have at this point? _____________
How much work did I do lifting up the ball? _____________________________________
If I lift the same ball the same distance on the Moon, then how much gravitational potential energy will it have? (Moon’s Gravity = 1.6 m/s2) ____________________________________
Answer: How much gravitational potential energy does the ball have at this point? At h = 20.4 m the gravitational potential energy of the ball reaches maximum.
How much work did I do lifting up the ball? As you are lifting the object you are doing work on the object. The work W done on an object by a constant force is defined as W = F·d. It is equal to the magnitude of the force, multiplied by the distance the object moves in the direction of the force.
Someone please help me with this !??
If the specific heat of iron = 0.46J C, how much heat is needed to warm 50 g of iron from 20C to 100C
Answer:
1840 J
Explanation:
From the question given above, the following data were obtained:
Specific heat capacity (C) = 0.46 J/gºC
Mass (M) = 50 g
Initial temperature (T₁) = 20 °C
Final temperature (T₂) = 100 °C
Heat (Q) required =?
Next, we shall determine the change in the temperature. This can be obtained as follow:
Initial temperature (T₁) = 20 °C
Final temperature (T₂) = 100 °C
Change in temperature (ΔT) =?
ΔT = T₂ – T₁
ΔT = 100 – 20
ΔT = 80 °C
Finally, we shall determine the heat required. This can be obtained as follow:
Specific heat capacity (C) = 0.46 J/gºC
Mass (M) = 50 g
Change in temperature (ΔT) = 80 °C
Heat (Q) required =?
Q = MCΔT
Q = 50 × 0.46 × 80
Q = 1840 J
Thus, 1840 J of heat energy is required.
find the energy released when there is a decrease of 0.3kg of material in a nuclear reaction
Answer:
E = 2.7 x 10¹⁶ J
Explanation:
The release of energy associated with the mass can be calculated by Einstein's mass-energy relation, as follows:
[tex]E = mc^2[/tex]
where,
E = Energy Released = ?
m = mass of material reduced = 0.3 kg
c = speed of light = 3 x 10⁸ m/s
Therefore,
[tex]E = (0.3\ kg)(3\ x\ 10^8\ m/s)^2[/tex]
E = 2.7 x 10¹⁶ J
anyone good at physics that can help me plss
Answer:
Where is the question?
-_-
-_-
-_-
-_-
-_-
please help its worth 10 points
no links please!
Answer:
which question
how to calculate acceleration
Answer:
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction.
Explanation:
hope it help mark me as brill please
Answer:
acceleration equals the change in velocity divided by time
Explanation:
A bucket of water is pushed from left to
right with increasing speed across a horizontal
surface. Consider the pressure at two points
lat the same level in the water.
Answer:
It is higher at the point on the left
Explanation:
Do you think using a homework machine could be considered cheating? Why or why not?
Use this free body diagram to help you find the magnitude of the force needed to keep this block in static equilibrium.
А.15.3 newtons
В.36.3 newtons
C. .63.5 newtons
D. 95.5 newtons
Split F₁ into its horizontal and vertical components:
F₁ = F₁ cos(θ) i + F₁ sin(θ) j
(boldface = vector; regular font = magnitude)
By Newton's second law, if the object is in equilibrium, then
• the net horizontal force on the block is
∑ F = F₁ cos(θ) - F₃ = 0 → F₁ cos(θ) = 70 N
• the net vertical force is
∑ F = F₁ sin(θ) + F₂ - W = 0 → F₁ sin(θ) = 65 N
Recall that cos²(θ) + sin²(θ) = 1 for any θ, so we have
(F₁ cos(θ))² + (F₁ sin(θ))² = (70 N)² + (65 N)²
F₁² = 9125 N²
F₁ = √(9125 N²) ≈ 95.5 N
