Answer:
x sin nx = x cos nx
same as
theta / theta x (xsin (nx)) = sin (nx) + (nx) cos (nx)
Xsin is an evil monster made my the Gods
Speed is __________ velocity.
a) The same as
b) The absolute value of
c) The negative of
d) The rate of change of
Answer:
Speed is the rate of change of velocity.
Explanation:
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement. Put another way, speed is a scalar value, while velocity is a vector. Speed is just describing how fast the motion is compared to velocity.
Hope this helps :)
heyyyyyyyyyyyyyyyyyy
Answer:
yes
Explanation:
a man weighing 989n on earth only 163 N on the moon. His mass on the moon is __ kg. (Use g=9.8m/s)
Answer:
16.63265306 Kg
Explanation:
This is a Newtons to weight conversion.
Fg = weight
Fg = N/9.8
If you spill household bleach on denim jeans, you will observe that the area of the spill no
longer has a blue color. Is this change chemical or physical? Give a reason for your
answer.
Answer: chemical change.
Explanation: Because the bleach has caused the denim to change color, the change is likely to be a chemical change.
The change that occurs when household bleach is spilled on denim jeans is a chemical change.
A physical change is a change in the form of a substance, but not in its chemical composition. For example, if you melt a piece of ice, you have made a physical change because the ice has changed from a solid to a liquid, but the chemical composition of the ice has not changed.
A chemical change is a change in the chemical composition of a substance. This means that the atoms in the substance are rearranged to form new substances. For example, when household bleach is spilled on denim jeans, the bleach reacts with the indigo dye in the jeans to form a new substance that is colorless.
In the case of household bleach on denim jeans, the bleach reacts with the indigo dye in the jeans to form a new substance that is colorless. This is a chemical change because the chemical composition of the indigo dye has been changed. The color change is a clear indication that a chemical change has occurred. When the bleach reacts with the indigo dye, the bonds between the atoms in the indigo dye are broken and new bonds are formed. This results in the formation of a new substance that is colorless.
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gravitational force acts a only between the sun and the planets moving around it b only between the Earth and the body is on it c between all bodies in the universe d only between the sun and the earth.
Answer:
(C) all bodies
F = G M1 M2 / R^2 all bodies (M1 and M2) are gravitationally connected
Which is greater 15 or 0.15
Answer:
15
Explanation:
0.15 is a decimal place after a 0, whereas the 15 is a whole number
explain what is the function of energy in the body and discuss internal and external body funcutions which energy is needed for
Answer:
Energy fuels your body's internal functions, repairs, builds and maintains cells and body tissues, and supports the external activities that enable you to interact with the physical world. Water, your body's most important nutrient, helps facilitate the chemical reactions that produce energy from food.
Which electromagnetic waves which electromagnetic waves have the highest frequencies in the electromagnetic spectrum?
OA.
gamma rays
B.
microwaves
O C.
radio waves
OD.
ultraviolet radiation
Answer:
gamma rays
Explanation:
What is the acceleration of a car that travels a constant velocity of 5.0 m/s for 5.5s?
Answer:
The acceleration of car is 0m/s .
Explanation:
The velocity doesn't change .
"constant velocity" means zero acceleration.
Hai quả cầu nhỏ hoàn toàn giống nhau, mang điện tích q1, q2 đặt trong chân không cách nhau 20cm thì hút nhau F = 5×10^-5. đặt vào giữa hai quả cầu tấm thủy tinh dày 5 cm có hằng số điện môi là 4. tính lực tác dụng giữa hai quả cầu
Answer:
Hai quả cầu nhỏ hoàn toàn giống nhau, mang điện tích q1, q2 đặt trong chân không cách nhau 20cm thì hút nhau F = 5×10^-5. đặt vào giữa hai quả cầu tấm thủy tinh dày 5 cm có hằng số điện môi là 4. tính lực tác dụng giữa hai quả cầu
Please help fast!!!!
As Al pine jumps off the end of a ski jump he has an initial velocity of 13m/s
A) how high will he be 2 sec after he jumps
B) at what other time will he be as high as he is in part(a)
C) at 2 sec was Al going up or down? Explain your reasoning
D) when is he again at the height of the skip jump?
E) Al spends a total of 5.2 seconds in the air. How far below the end of the skip jump is the ground
Answer:
(Hope this helps can I pls have brainlist (crown)☺️)
Explanation:
In pic
Please help with this :(
Answer:
Below
Explanation:
We can use this formula to find the acceleration of the crate :
acceleration = net force / mass of object
Plug in our values :
acceleration = 50 N / 50 kg
= 1 m/s^2
acceleration = 100 N / 50 kg
= 2 m/s^2
acceleration = 150 N / 50 kg
= 3 m/s^2
acceleration = 200 N / 50 kg
= 4 m/s^2
Hope this helps! Best of luck <3
why does a bus resist changes in motion more than a motorcycle
Answer:
inertia is the resistance to change, so it would make sense for the bus to not change direction and would then also resist changes in motion where as a motorcyle whouldnt be as resistent
Explanation:
Answer:
The bus has more mass than the motorcycle.
Explanation:
Higher masses resist the change in motion greater than smaller ones.
Position vs. Time
30
20
10
Position (m)
10
- 20
- 30
o
10 20
30
40 50
Time (s)
60
70
6. Use the graph above to answer Question 6:
The graph represents the motion of a car moving linearly. When is the car
moving backwards?
A. Os to 10 s
B. 20 s to 40 s
C. 40 s to 50 s
D. 50 s to 60 s
Answer:
D
Explanation:
cause the slope works with going up or down
Lillle is running. She increases her initial speed of 30 km/h to 40 km/h so she
can win the race. If she takes 0.05 hours to complete this increase, what is
her acceleration?
[tex]\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{40-30}{0.05}[/tex]
[tex]\\ \sf\longmapsto Acceleration=\dfrac{10}{0.05}[/tex]
[tex]\\ \sf\longmapsto Acceleration=200km/h^2[/tex]
Answer
[tex]200km {h}^{ - 2} [/tex]
Explanation
[tex]Acceleration = \frac{final \: \: \: velocity - initial \: \: velocity }{time} \\ = \frac{(40 - 30)km {h}^{ - 1} }{0.05h} \\ = \frac{10}{0.05} \\ = 200km {h}^{ - 2} [/tex]
Hope this helps you.
Let me know if you have any other questions :-):-)
ph
what’s the correct choice?
help!!
Answer:
I think it's protons as they're positive!!
Two cars are traveling eastward on a highway, as shown in the left figure below. After 5.0 sec, the cars are side by side at the next telephone pole, as shown on the right. The distance between each of the poles is 70.0 m. Determine the following quantities:
a) The distance the van has traveled during 5.0s interval
b) the distance limousine has traveled during the 5.0s interval.
c)The average velocity of the van during this 5.0s interval
d)the average velocity of the limousine during this 5.0s interval.
Paolo says that his bicycle is hard to pedal.Mia looks at the bicycle and tells him he needs to oil the chain.explain why oiling the chain would help paolo
Answer:
Less friction
Explanation:
Paolo's bike is too difficult to pedal because there is too much friction in the mechanisms of the bike. To reduce friction, Paolo must oil the chain. This will make the bike run much more smoothly and allow for easier pedalling.
Can you solve this?
What is the best app to practise physics?
Answer:
PhysicsProf.
Explanation:
Its the best
give brainliest or thanks tysm
Answer:
PhysicsProf
Explanation:
density is 1.3kg/m3 volume=? mass=? 80m 40m 15m
From the given information, it's not possible to find the mass or the volume of the sample.
Density is their RATIO, but you can't tell if the sample is the size of an ant or a school-bus.
What would the position-time graph look like for an object that remains still over time?(1 point)
A. a horizontal line
B. an upward curve
C.an increasing line
D. a decreasing line
Plz Helppp. I need it ASAP
Answer:
a
Explanation:
it would be horizontal
The position-time graph look like A. a horizontal line for an object that remains still over time.
A position-time graph shows how far an object has moved from its starting point at any given time since it started moving. The slope of a position graph shows the velocity of an object.
The position-time graph looks like a horizontal line for an object that remains still over time.
Option A. is correct.
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Why would protons and neutrons hold together in the first second following the Big Bang?
Answer:
The universe was hot and dense
Help quickly…
As a person travels due east, the altitude of the North Star
(1) decreases
(2) increases
(3) remains the same
East or west: it remains the same.
North: it increases.
South: it decreases.
At the North pole: it's straight up over your head.
At the equator: it's on the horizon, north of you.
South of the equator: it's below the horizon and you can't see it at all.
A circus performer juggling while standing on 10 a tightrope suspended 15.0 m above the ground tosses a sword directly upward into the air with a speed of 5.0 m/s. If the sword leaves his hand 1.0 m above the tightrope, what is the sword's maximum height above the ground? Round your answer to the nearest tenth
The sword's maximum height above the ground rounded to the nearest tenth is 122.49m
In order to get the maximum height of the rope above the ground, we will use the formula for calculating the range;
[tex]R=u\sqrt{\frac{2H}{g} }[/tex]
Given the following parameters:
speed u = 5.0m/s
H is the maximum height
g is the acceleration due to gravity = 9.8m/s
R is the range = 15.0m
Substitute the given parameters into the formula to have:
[tex]15=5\sqrt{\frac{2H}{9.8} }\\\frac{15}{3}=\sqrt{0.2041H} \\5^2 = 0.2041H\\H = \frac{25}{0.2041}\\H= 122.48m[/tex]
Hence the sword's maximum height above the ground rounded to the nearest tenth is 122.49m
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What important scientific advance made bacteria less dangerous to humans
Answer:
bacteria like
virus
Esther dives off a 3m springboard and initially bounces up with a velocity of 8.0 m/s at an angle of 80.0 to the horizontal.. what are the horizontal and vertical components of her velocity
This question involves the concept of the resolution of a vector into its rectangular components.
The horizontal component of velocity is "1.4 m/s", and the vertical component of the velocity is "7.9 m/s".
In order to find the horizontal and vertical components of the velocity of Esther, we must resolve the velocity vector into its rectangular components. Hence, the following formulae will be used:
[tex]Horizontal\ Component = v_x = v\ Cos\theta\\v_x = (8\ m/s)(Cos\ 80^o)\\v_x = 1.4\ m/s[/tex]
[tex]Vertical\ Component = v_y = v\ Sin\theta\\v_y = (8\ m/s)(Sin\ 80^o)\\v_y = 7.9\ m/s[/tex]
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The attached picture shows the resolution of a vector.
which is an action/reaction force pair? check all that apply.
Answer:
According to Newton's third law, for every action force there is an equal (in size) and opposite (in direction) reaction force. Together, these two forces exerted upon two different objects form the action-reaction force pair.
Explanation:
Sana makatulong ^_^
Give one example of an object that is accelerating
Answer:
The only answer that i could think of:
A falling body
Answer:
a sky diver that just jumped out of a plane
or a car that just had the light turn green
or an apple droped from a tree
or a sled sliding down a hill
Explanation:
all of these objects would be acclerating
the skydiver and apple would be acclerating from 0 at a rate of 9.8m/s^2
Hope this helps! :)
A bicyclist brakes from 21.7 m/s to a stop in 32.3 m.
What is the acceleration of the bicyclist?
How much time does it take for the bicyclist to stop?
What is the bicyclist’s average speed?
The acceleration of the bicycle during the motion before stopping is 7.29 m/s².
The time taken for the bicycle to stop is 2.98 s.
The average speed of the bicycle is 10.83 m/s.
The given parameters;
initial velocity of the bicycle, u = 21.7 m/sdistance traveled by the bicycle, s = 32.3 mThe acceleration of the bicycle is calculated ad follows;
v² = u² + 2as
where;
v is the final velocity of the bicycle after stopping = 0
0 = u² + 2as
-2as = u²
[tex]a = -\frac{u^2}{2s} \\\\a = \frac{(21.7)^2}{2\times 32.3} \\\\a = -7.29 \ m/^2\\\\|a| = 7.29 \ m/s^2[/tex]
The time taken for the bicycle to stop is calculated as;
v = u + at
0 = 21.7 - 7.29t
7.29t = 21.7
[tex]t = \frac{21.7}{7.29} \\\\t = 2.98 \ s[/tex]
The average speed of the bicycle is calculated as;
[tex]v = \frac{totla \ distance}{total \ time} \\\\v = \frac{32.3}{2.98} \\\\v = 10.83 \ m/s[/tex]
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