Answers
5. 35 - (-20) = 55
6. [tex]v_{av}=\frac{\Delta s}{\Delta t}=\frac{20-(-20)}{6-0} =\frac{40}{6} =6.67[/tex]
7. D and G
8. A, C, and E
9.
At t = 19,
[tex]s=\frac{s_{final}-s_{initial}}{t_{final}-t_{initial}}(t_1-t_{initial})+s_{initial}=\frac{40-(-20)}{23-18}(19-18)-20=12-20= -8[/tex]
At t = 27,
[tex]s=\frac{s_{final}-s_{initial}}{t_{final}-t_{initial}}(t_1-t_{initial})+s_{initial}=\frac{0-40}{29-26}(27-26)+40=\frac{-40}{3}+40=26.67[/tex]
Therefore, displacement between t = 19 and t = 27 is:
26.67 - (-8) = 34.67
10. [tex]v=\frac{\Delta s}{\Delta t}=\frac{0-40}{29-26}=-13.33[/tex]
11. -20
12. [tex]v=\frac{\Delta s}{\Delta t}=\frac{20-(-20)}{6-0}=\frac{40}{6}=6.67[/tex]
Related Questions
Please heeelllllppppppppp
Answers
Answer:They repel each other
Step by Step Explanation :
If you bring a positive object near the electroscope, it will attract the electrons toward the terminal. The leaves will move away from each other. You can also use this process with a positive object to charge the electroscope.
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Answer this question fast please
Answers
Answer:
A. Strain
Explanation:
(no explanation)
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An object has a mass of 3.8 kg and a force of 11.6 N is applied to it. What is the acceleration that results?
Answers
[tex]\\ \sf\longmapsto F=ma[/tex]
[tex]\\ \sf\longmapsto a=\dfrac{F}{m}[/tex]
[tex]\\ \sf\longmapsto a=\dfrac{11.6}{3.8}[/tex]
[tex]\\ \sf\longmapsto a=3.05m/s^2[/tex]
This car started from rest at a
position of 4 km from the reference
point. It accelerated at 2.2 m/s^2
for a period of 0.5 minutes. How far
from the reference point is the car
located after the acceleration ends?
2 km
5 km
1 km
6 km
Answers
Answer:4.99km
Explanation:
We'll use s for distance, and t for time in seconds.
s = (1/2)at²
t = 0.5 minute*(60sec/1min)=30 sec
s = (1/2)*(2.2m/s²)(30sec)²
s = 990m
Reference point is 4km at start. Distance from reference point is 9km + 0.990km = 4.99km
what is acceleration of gravity
Answers
Answer:
Verified answer
Explanation:
Make me as brain liest plz
The half-life of Radon-222 is 3.8 days. Calculate how long a 48g sample of radon will last before it contains only 3g of radon.
PLS HELP FOR MY GCSE REVISION! ill give brainliest
Answers
Answer:
48 / 3 = 16
1 / 16 of the original amount is to remain
4 half lives = 1/2 * 1/2 * 1/2 * 1/2 = 1/16
After 4 half lives 1/16 of the original amount is present
4 half-lives * 3.8 days / half-life = 15.2 days
After 15.2 days only 3 g will be present
A water bottle contains 15.0 ounces of water. A person drinks 0.5 ounces per minute. How many hours will it take to drink all of the water?
Answers
15÷ 0.5= 30
Convierte 25 Km/h a m/s
Answers
Answer:
6.94444
Explanation:
Answer:
6.944m/s
Explanation:
[tex]25km/h * \frac{1h}{60min}*\frac{1min}{60s} *\frac{1000m}{1km}[/tex]
[tex]\frac{25km}{1h} * \frac{1h}{60min}*\frac{1min}{60s} *\frac{1000m}{1km}[/tex]
[tex]\frac{25km*1h*1min*1000m}{1h*60min*60seg*1km}[/tex]
[tex]\frac{25*1*1*1000}{1*60*60*1}[/tex]
[tex]\frac{125}{18} = 6.944m/s[/tex]
write the energy change when charging the battery of a mobile phone
Answers
Answer:
Chemical energy
Explanation:
Because most of the modern mobile batteries are lithium ion batteries where the electricity is stored by the chemical changes in the ionic structure of the battery.
Answer:
to make an energy the electricity provide the energy charging when use
Which describes refraction?
the reflection of light as it passes through a substance
the focusing of light as it passes through a substance
the emission of light as it passes through a substance
the bending of light as it passes through a substance
Answers
Answer:
A
Explanation:
Image result for Which describes refraction? the reflection of light as it passes through a substance the focusing of light as it passes through a substance the emission of light as it passes through a substance the bending of light as it passes through a substance
When electromagnetic radiation, in the form of visible light, travels from one substance or medium into another, the light waves may undergo a phenomenon known as refraction, which is manifested by a bending or change in direction of the light.
A teacher asks a group of students to use a ruler to measure the amplitude of the wave shown below. Between which of the following points should the amplitude be measured?
A. Points U and Z
B. Points V and X
C. Points W and Y
D. Points X and Z
Answers
Answer:
c for me
Explanation:
I don't think so
if I'm correct if I'm wrong
Answer:
a. points u and z
Explanation:
amplitude, in physics, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position
correct answer choice??
-----------------------------------------
Answers
Explanation:
magnitude=force/charge
=(2.6N)/(1.5 ×10^-6)
=1.7 × 10^6 N/C
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Answers
Answer:
8.m= 0. 113 kg
W = 1.1074 N
g = 9.8 m/ s²
9.m= 870 kg
W = 8526 N
g = 9.8 m/s²
10.a) weight on earth:
weight = mass × acceleration due to gravity (g)
g on earth = 9.8 m/s²
W = 75 × 9.8
W = 735 N
b) g on Mars
285 = 75 × g
g = 285/ 75
g = 3.8 m/ s²
A car, which started at rest, took 5.8 seconds to reach a velocity of 2km/s. What is
the average velocity?
Answers
Answer:
1 m/s
Explanation:
Use SUVAT and the equations of motion:
S
U = 0 km/s since it started at rest.
V = 2 km/s
A
T = 5.8 seconds
Equation used: [tex]v=\frac{v+u}{2}[/tex]
[tex]v=\frac{2+0}{2}[/tex]
v=1
How do you determined the atomic mass and mass number of an atom?
Answers
Answer:
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
Explanation:
Help me with this please
Answers
Analyze data table #1 and then create a line graph comparing speed and time.
Answers
If 21.35 divides 12.96.
What’s the answer
Plzzz help me
Answers
Answer:
1.647376
Explanation:
Change the divisor 12.96 to a whole number by moving the decimal point 2 places to the right. Then move the decimal point in the dividend the same, 2 places to the right.
We then have the equations:
2135 ÷ 1296 = 1.647376
and therefore:
21.35 ÷ 12.96 = 1.647376
Both calculated to 6 decimal places.
is it possible for humans to use there extra eyelid?
Answers
Answer:
Known as the “plica semilunaris,” it's much more prominent in birds and a few mammals, and functions like a windshield wiper to keep dust and debris out of their eyes. But in humans, it doesn't work. It's vestigial, meaning it no longer serves its original purpose.
Explanation:
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If a car accelerates from 0 to 10 m/s in 4 seconds, and the mass of the car is 1500 kg. What force is created by the car?
Answers
Answer:
PLS MARK BRAINLIEST
Explanation:
f=m (v- u)/t
u=0m/s
v=10m/s
t=4 secs
m=1500kg
f=1500(10-0)/4
f=3750N
5
2. A truck took 4 hours to complete a journey. At the first 2h,
it travelled at an average speed of 70 km/h. For the rest of
the journey, it travelled at an average speed of 80 km/h.
What was the total distance of the journey?
Answers
Answer:
300km
Explanation:
we use the formula s=d/t and solve for d.
d=st
s1=70km/h
s2=80km/h
t=2h
total d= (ts1)+(ts2)
=2(70)+2(80)
=300km
Arwan finds a piece of quartz while hiking in the mountains. When he returns to school, he takes it to his science teacher. She helps him determine the mass to be 788.9 g. She also tells Arwan that the density of quartz is 2.6 .
What is the volume of Arwan’s piece of quartz?
Answers
Answer:
303.42
Explanation:
cause i got it right on my question
A car's speed 3 seconds after accelerating from rest at 2 m/s^2 is?
Answers
Answer:
After 3 seconds, the velocity is 4.5+3×1.5=9 m/s.
write down the relation between energy and power.
Answers
Energy is what makes change happen and can be transferred form one object to another. Energy can also be transformed from one form to another. Power is the rate at which energy is transferred. It is not energy but is often confused with energy.
Energy and power are closely related but are not the same physical quantity. Energy is the ability to cause change; power is the rate energy is moved, or used.
the full range of electromagnetic energy is called the
Answers
Answer: the electromagnetic spectrum
Explanation:
The full range of frequencies of electromagnetic radiation is called the electromagnetic spectrum. From longest to shortest wavelengths, it includes radio waves, microwaves, infrared light, visible light, ultraviolet light, X rays, and gamma rays.
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Equations for work
W=
F=
D=
Answers
Answer:
W= work
F= force
D= Displacement
Explanation:
Work can be calculated with the equation: Work = Force × Distance.
A force of 10 N works on a ball over a distance of 5 m. The force is perpendicular to the displacement of the ball. What is the total work done by the force?
Answers
Since the force is perpendicular to the displacement of the ball, the total work done by the force is 50 Nm.
Given the following data:
Force = 10 NewtonDistance = 5 metersTo find the total work done by the force:
The work done by an object is the product of the perpendicular force acting on the object and the distance it covers.
Mathematically, work done is given by the formula:
[tex]Work\;done = Force[/tex] × [tex]distance[/tex]
Substituting the given parameters into the formula, we have;
[tex]Work\;done = 10[/tex] × [tex]5[/tex]
Work done = 50 Nm.
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NEED HELP!!!!! 11 POINTS!!!
Troy has decided that he wants to be healthier. He has been doing a pretty good job sticking to the exercise routine that he designed. However, he tends to eat a lot of junk food. He assumes that if he is exercising, diet is not really that important. What is the BEST response to Troy’s assumption?
A.
If he eliminates junk food, he will be eating healthy.
B.
As long as he is not overweight, diet does not matter.
C.
If he exercises a lot then it does not matter what he eats.
D.
Exercise and attention to diet need to go together to build health.
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Answers
I'LL MARK YOU BRAINLISTTT!!!!
Answers
Answer:
i think it is c
Explanation:
sorry if im wrong
Use the Pythagorean Theorem to find the velocity of an airplane traveling north at 100 kilometers per hour. It is also flying through a wind that is blowing west at 30 kilometers per hour.
Answers
Answer:
I'm not sure
Explanation:
HAVE FAITH IN UR SELF AND YOU WILL GETT ITTTT HOPEFULLAYY