Answer:
1.0147 rounded to the nearest thousandths place is 1.015
Answer:
1.015
Explanation:
If you put the number in place value, you have 1 in the ones place, 0 in the tenths place, 1 in the hundreds place, 4 in the thousandths place, and 7 in the ten thousandths place. In order to know how to round 4, you must look at the number directly after it. Since 7 is greater than five, round up to ten. This increases 4 by 1 which would give you the answer 1.015.
What is meant by the phrase "a consistent method of measurement"?
A. All measurements are in SI units.
B. Every measurement is exactly the same numerical value.
C. The same person performs all measurements.
D. Measurements are taken in a way that is the same every time.
Answer:
D. Measurements are taken in a way that is the same every time
Explanation: I took the quiz and got it right.
why do some science classes teach that electrons, comparatively, have no mass?
helpppp ASAPPP
Answer:
An electron's mass is only 1/1,836 the mass of a proton. An electron is therefore considered nearly massless in comparison with a proton or a neutron.
If a metal has a mass of 78.2 g and a volume of 11.4 mL, what is its density?
Answer:
6.86g/mL
Explanation:
The density of the metal would be approximately 6.859 grams per milliliter (g/mL).
Given that the mass (m) is 78.2 g and the volume (V) is 11.4 mL, we can plug these values into the formula:
Density is a physical property that quantitatively expresses how much mass is contained within a given volume of a substance. In other words, it is a measure of how tightly packed the particles or molecules of a material are. Mathematically, density is defined as the mass of an object (or substance) divided by its volume. It is often denoted by the Greek letter "ρ" (rho).
Density is defined as mass per unit volume. The formula for density is:
Density (ρ) = Mass (m) / Volume (V)
Density (ρ) = 78.2 g / 11.4 mL
Now, let's calculate the density:
Density (ρ) = 6.859 g/mL
So, the density of the metal is approximately 6.859 grams per milliliter (g/mL).
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Why does it sound different when tapping on an aluminum spoon with an aluminum spoon when tapping on an iron jar?
Answer:
When the different objects drop on floor then each object vibrate at its natural frequency and produce different sound.
Explanation:
Conclusion: Thus different object has different vibration frequency and when they dropped on floor each vibrate at its natural frequency and produce different sound.
1. A race car accelerates uniformly from 19.5 m/s to 50.1 m/s in
2.47 seconds. Determine the acceleration of the car.
The acceleration of the car is 79.8.
Answer:
12.39m/s²
Explanation:
use the formula a=v-u
t
an audi car advertisement states its car can accelerate from a starting velocity of rest to an ending velocity of 70m/s in 35 seconds. what is the car acceleration?
Answer:
279 m/s
Explanation:
Answer:
2m/s^2
Explanation:
A=(u-v)/t
where u=final velocity and v=initial velocity and t=time
therefore u =70 and v=0 because the question said velocity of rest and finally t=35
so, (70-0)/35= 70/35=2
What is the average velocity of a car traveling South on a straight road for two hours returns to the starting point after three hours.
The average velocity of the car traveling south and later returned to the starting point is 0.
Average velocity is defined as the change in displacement per change in the time of motion.
Average velocity is calculated as follows;
[tex]v = \frac{\Delta x}{\Delta t} = \frac{x_2 - x_1}{t}[/tex]
Let the initial displacement of the car, x₁ = 20 m
Let the final displacement of the car, x₂ = 20 m (since the car returned to the starting point).
The average velocity is calculated as;
[tex]v = \frac{x_2 - x_1}{t} = \frac{20 - 20}{5} = 0[/tex]
Thus, the average velocity of the car traveling south and later returned to the starting point is 0.
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I NEED HELP I AM SO CONFUSED, WILL GIVE BRAIN.
A man is on a 30m cliff and throws a ball down with a speed of 7 m/s.
A) With what velocity does the ball hit the ground? B) How high above the ground is the ball after the ball has fallen for 1 second?
Answer:
210
Explanation:
A ball rolls horizontally off the cliff at a speed of 30 m/s. It takes 7 seconds for the ball to hit the ground. What is the height of the cliff and the horizontal distance traveled by the ball?
S = (1/2)*9.8 m/s^2 * 7^2 = 240.1 m if the ball is very dense so air resistance, and therefore terminal velocity, can be ignored.
S = v * t = 30 m/s * 7 s = 210 m for the horizontal distance, again assuming negligible air resistance.
Height above the ground is the ball after the ball has fallen for 1 second is 210 m.
What is speed?The speed of an object is the magnitude of the change of its position over time or the magnitude of the change of its position per unit of time; it is thus a scalar quantity.
A ball rolls horizontally off the cliff at a speed of 30 m/s. It takes 7 seconds for the ball to hit the ground.
S = (1/2)*9.8 m/s² * 7² = 240.1 m if the ball is very dense so air resistance, and therefore terminal velocity, can be ignored.
S = v * t = 30 m/s * 7 s = 210 m for the horizontal distance, again assuming negligible air resistance.
Height above the ground is the ball after the ball has fallen for 1 second is 210 m.
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some bird migrate 20000 miles if 1 mile equals 1.5 km calculate the distance there birds fly in km
A plane mirror moves towards the object with a velocity of 2m/s and the object itself moves towards the mirror with a velocity of 5m/s. What is the velocity of the image approaching towards the object..
Answer:
3.33 m/s
Explanation:
1/2 = 1/5 + 1/x
1/x = 1/2 - 1/5
1/x = 5/10 - 2/10
1/x = 3/10
x = 10/3
x = 3.33 m/s
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Newton's second law of motion gives the .............
definition of force
unit of force
nature of force
none of the above
Answer:
definition of force
Explanation:
It states that "the rate of change in momentum is proprtional to the force applied"
[tex]{ \rm{momentum = mass \times velocity}} \\ [/tex]
• from the law stated:
[tex]{ \rm{ \frac{ \delta momentum}{time} = force}} \\ \\ { \rm{ \frac{mv - mu}{time} = force}} \\ \\ { \rm{ \frac{mass(v - u)}{time} = force}} \\ \\ { \rm{mass \times \frac{(v - u)}{time} = force }}[/tex]
• from first newton equation:
[tex]{ \boxed{ \tt{ \frac{v - u}{t} = acceleration}}} \\ [/tex]
• therefore
[tex]{ \rm{mass \times acceleration = force}} \\ \\ { \boxed{ \rm{force = mass \times acceleration}}}[/tex]
v is final velocityu is initial velocityt is time
Treating the International Space Station as a point mass, what is the gravitational potential
30 m from the centre? M= 419 000 kg.
Answer:
Ep=mgh
Ep=419000×9.8×30
Ep=123,186,000 J
the gravitational potential energy is 123 186 000 joules
If you throw a ball into the air, Earth exerts a force on the ball. The ball in the air exerts no force.
Answer:
If an unbalanced force is acting on a rope, the rope will accelerate In The Direction Of The Unbalanced Force. The speed you read on your speedometer is the Constant speed.
Explanation:
did it on edge
The leaves of plants contain specialized parts that absorb energy from sunlight. Which feature would help a plant better compete for sunlight?
leaves that change color
colorful flowers
larger overall leaf size
a shorter stem
Answer:
In most plants, the leaves are the main food factories. They capture the sun's energy with the help of chlorophyll in the leaf cells. The chlorophyll traps and packages the energy from the light of the sun in a process called photosynthesis. Leaves usually have a large surface so they can collect the most sunlight.
Explanation:
Hope this helps...maybe
Answer:
C
Explanation:
what are effects of gravity??
Anyone help me
Answer: Gravity has an effect of a gravitational pull, which keeps things on the ground instead of floating around like we are in space.
Answer:
hello
The sun's gravity keeps Earth in orbit around it, keeping us at a comfortable distance to enjoy the sun's light and warmth
Explanation:
hope it helps
good day
tysm ☀❤✅✌
the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Answer:
3m/s^2
Explanation:
acceleration=velocity/time
acceleration= 30/10=3m/s^2
V1=2 L
T1= ? degrees Kelvin
V2= 4 L
T2= 300 degrees Kelvin
Explanation:
using Charles law
V1/T1 = V2/T2
2/ T1 = 4/300
cross multiply
4 X T1 = 2 X 300
T1 = 600/4 = 150
T1 = 150°k
a bus starts to move from rest . if its velocity becomes 90km/per hour after 8s. calculate its acceration .
its answers is : 3.13ms-2
Answer:
3.13m/s²
Explanation:
first convert from KM to M, 1km-1000m then convert from km/h to m/s (speed)90×1000/3600 note: 1h- 3600s
=25m/s
a=v/t
a= 25m/s ÷ 8s
a= 3.125 / 3.13m/s²
fun little question,
how many atoms do you think is in a star, i wanna know your answer please share.
Answer:
There is 18
Explanation:
Oh a sqiurrel’s hidden nuts, for every 5 that get found, there are 3 that to not get found. A squirrel hid 40 nuts all together. How many of the nuts do not get found?
Answer:
66 2/3
Explanation:
Cosmic abundance is made up primarily of what gases?
Answer:
Hydrogen and Helium
Explanation:
The abundance of chemical elements in the universe was made up of large amounts of these 2 gases, the rest made up only about 2% of the universe. Which were produced mostly by supernovae and certain red giant stars
Infrequent urination, dry skin, and dizziness are all symptoms of
Answer:
Dehydration
Explanation:
What happens when you sit in a
chair?
A. Gravity is pulling you down but the chair
pushes you up with equal force.
B. Gravity is pulling you down and the chair
pushes you up into the air.
C. There is no force being exerted.
D. Gravity is pulling you down and the chair is
sliding sideways.
Answer:
B
Explanation:
that is the only way you can sit
A brick is dropped from a height of 31.9 meters
Explanation:
what is asked give brief explanation about question
1. How long is a day on Venus?
2. How is Venus similar to Earth?
3. Describe Venus’ atmospheric composition.
Answer:
2:Venus is often named as Earth's twin because both worlds share a similar size, surface composition and have an atmosphere with a complex weather system. ... Both planets have almost the same size and density and Venus is only a 30% closer to the Sun than Earth 1:116d 18h 0m 3: The atmosphere of Venus is made up almost completely of carbon dioxide. It also includes small doses of nitrogen and clouds of sulfuric acid. ... This composition causes a runaway greenhouse effect that heats the planet even hotter than the surface of Mercury, although Venus lies farther from the sun.
Explanation:
two sports where it would be good to have long thin bones , explain your answer
Answer:
Well, I know basketball is one. Also, Track and Field and tennis
Can anyone Hele please I don't know how to convert the light years in order to get an equation like the one on Alpha Centauri in the picture, but I do know how to log it.
Answer:
Log 10 ( 4.16x10^16)
Explanation:
Other distance from sun you have to search by your self then apply the equation Log 10 ( distance from sun )
Put the levels of organization of an ecosystem in order from smallest (1) to largest (4).
community
ecosystem
organism
population
Answer:
3
community
4
ecosystem
1
organism
2
population
Explanation:
i did it other guy worng
if a hot air balloon is seen rising above the top of a hill, what is the top of the hill called?
Answer:
If you see that a hot-air balloon is rising above the top of a hill, what is the top of the hill called?
A. delta point
B. distance system
C. coordinate system
D. reference point
It is reference pointhope it helps :)
A cannonball is fired from a cliff that is 50 meters above the ground. The cannonball is fired horizontally with a speed of 120 meters per second.
Calculate the horizontal distance that the cannonball will travel.
The horizontal distance that the cannonball will travel is 383.33m
In order to find the horizontal distance, we will use the formula for calculating the range expressed as:
[tex]R = u\sqrt{\frac{2H}{g} }[/tex] where:
u is the velocity
H is the height
g is the acceleration due to gravity
[tex]R = 120\sqrt{\frac{2(50)}{9.8} }\\R = 120\sqrt{\frac{100}{9.8} } \\R=120\times 3.1943\\R=383.33m[/tex]
Hence the horizontal distance that the cannonball will travel is 383.33m
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