Answer:
Birds in migration can travel as far as 16,000 miles. To reach their destination in time, some travel at speeds of 30mph.
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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I want you to.......
Explain the Michelson-Morley experiment.
And please explain the equations.
Please ☺️❤️
Answer:
Michelson reasoned that, if the speed of light were constant with respect to the proposed ether through which Earth was moving, that motion could be detected by comparing the speed of light in the direction of Earth's motion and the speed of light at right angles to Earth's motion.
if the distance is 207m what is the time
Answer:
That depends on your average speed and the number of stops you make. However, assuming you could average 55 miles per hour for the entire distance, your total driving time would be about 3 hours and 45 minutes.
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
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
9.) Why would a pendulum swing faster or slower on different planets?
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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What is an uncharged body? In physics (simple words)
An uncharged body is a body that has equal magnitude of positive as well as negative charge on it. So as soon as some charged body is placed near it, the charged body induces negative charges on the uncharged body.
Please help I'll mark brainliest
Help asap please thank you
Answer:
the answer its time
v = d/t
Answer:distance
Explanation:
What is a common disease caused by a fungus?
A.
common cold
B.
HIV/AIDs
C.
athlete's foot
D.
pneumonia
PLZZZZZZ Help Due tmr
What is the acceleration of a Ford Mustang GT that can go from 0.00 to 27.8
m/s in 5.15 seconds?
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:
im confused on number two can u help me through it
Hi there!
We can solve this in two ways, using the Work-Energy theorem or kinematics.
Work-Energy:
We know that:
Ei = Ef, as long as there are no external forces working on the system.
Thus:
Ei = PE = mgh
Ef = KE = 1/2mv²
Therefore:
mgh = 1/2mv²
We can cancel out the mass:
gh = 1/2v²
9.8(10) = 1/2v²
√196 = v = 14 m/s
We can also solve using kinematics, using the equation:
vf² = vi² + 2ad
From rest (vi = 0 m/s) and a = g, so:
vf² = 2gd
vf = √2gh
vf = √(2 × 9.8 × 10) = 14 m/s
whats the kinetic energy please help me ive been stuck for a while
Answer:
k=1/2mv²
Explanation:
k is the kinetic energy
m is mass
and v is velocity/speed
Why is carbon-14 the best element to use for dating things?
Answer:
the radioactivity of carbon-14 DECAYS BY HALF.
Explanation:
A truck pulls a trailer on a flat stretch of road. The forces acting on the trailer are
the force due to gravity (250 000 N downward), the force exerted by the road
(250 000 N upward), and the force exerted by the cable connecting the wailer to
the truck (20 000 N to the right). The forces acting on the truck are the force due to
gravity (80 000 N downward), the force exerted by the road (80 000 N upward), the
force exerted by the cable (20 000 N to the left), and the force causing the truck to
move forward (26 400 N to the right).
The net vertical force on the trailer is 0, while the net horizontal force on the trailer is 20,000 N to the right.
The net vertical force on the truck is 0, while the net horizontal force on the truck is 6,400 N to the right.
The given parameters;
the trailer:
force on the trailer due to gravity, Fg = 250,000normal force on the trailer due to the road, N = 250,000 Nhorizontal force on the trailer, Fx = 20,000 N to the rightthe truck:
force on the truck due to gravity, Fg = 80,000 Nnormal force on the truck due to the road, N = 80,000 Nleft horizontal force on the truck, Fx = 20,000 Nright horizontal force on the truck, Fx = 26,400 NThe net force on each vehicle is calculated as follows;
for the trailer:
Net vertical force is calculated as;
[tex]\Sigma F_y = 250, 000 \ N - 250,000 \ N = 0[/tex]
Net horizontal force is calculated as;
[tex]\Sigma F_x = 20,000 \ N[/tex]
for the truck;
Net vertical force is calculated as;
[tex]\Sigma F_y =80,000 \ N - \ 80,000 \ N = 0[/tex]
Net horizontal force is calculated as;
[tex]\Sigma F_x = 26,400 \ N - \ 20,000 \ N = 6,400 \ N \ to \ the \ right[/tex]
"Your question is not complete, it seems to be missing the following information;"
find the net force on each vehicle.
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Why do atoms
have no electric charge even though most of
rticles have charges?
What important scientific advance made bacteria less dangerous to humans
Answer:
bacteria like
virus
Hai hạt bụi trong không khí cách nhau 3cm mỗi hạt mang điện tích -9,6.10 mũ -13C. A )Tính lực đẩy tĩnh điện giữa hai hạt
B ) tính số electrong dư trong mỗi hạt bụi biết diện tích củ mỗi electrong -1,6.10 mũ -19C
Answer:b
Explanation:
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
State whether these questions are true or false.
Q1) Distance formula is displacement/time T/F?
Q2)velocity formula is = displacement/time T/F?
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The given statements are :
Q1) Distance formula is displacement/time T/F?
- False
Q2)velocity formula is = displacement/time T/F?
- True
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 :)
A 0.12 kg object makes an elastic head-on collision with a 0.18 kg stationary object. The final velocity of the 0.12 kg object after the collision is 0.048 m/s in the direction opposite its initial movement. The final velocity of the 0.18 kg object after the collision is 0.19 m/s in the same direction as the object which strikes it. What was the initial velocity of the 0.12 kg object?
Answer:
0.12kg / 0.19
Explanation:
Becase the volcity reuded
The final velocity of the 0.18 kg object after the collision is 0.19 m/s in the same direction as the object which strikes it, then the initial velocity of the 0.12 kg object would be 0.237 m / s .
What is momentum?It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.
As given in the problem, a 0.12 kg object makes an elastic head-on collision with a 0.18 kg stationary object. The final velocity of the 0.12 kg object after the collision is 0.048 m/s in the direction opposite its initial movement. The final velocity of the 0.18 kg object after the collision is 0.19 m/s in the same direction as the object which strikes it.
By using the conservation of the momentum,
v × 0.12 + 0 × 0.18 = ( - 0.048)× 0.12 + 0.19 × 0.18
v = 0.237 m / s
Thus, the initial velocity of the 0.12 kg object would be 0.237 m / s .
To learn more about momentum from here, refer to the link given below ;
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I need the right answer ASAP NO LINKS!!!
The first one!
Hope this helps pls mark as brainliest :)
Answer:
Models change to accommodate new discoveries.
Explanation:
Scientific models are based on current scientific knowledge. This means that when new discoveries are made they are subject to change.
how the x ray use the behavior and characteristics of the electromagnetic wave to function.
Answer:
How do X rays use electromagnetic waves to function?
X-rays are very high-frequency waves and carry a lot of energy. They will pass through most substances, making them useful in medicine and industry to see inside things. An X-ray machine works by firing a beam of electrons at a "target." If we fire the electrons with enough energy, X-rays will be produced.
Explanation:
Cuales son las propiedades de los materiales semiconductores de electricidad?
Answer:En general, los semiconductores son materiales, inorgánicos u orgánicos, que tienen la capacidad de controlar su conducción dependiendo de ...
Explanation:
A toy car is pushed off a 1.2 meter tall table and lands 3 meters from the base of the table.
A. What was the initial horizontal velocity of the toy car?
B. How long did it take the toy car to hit the ground?
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CAN YOU BRAINLEST ME
Answer:
w
Explanation:
w
1. A cross country skier averages 3.2 m/s over 9.1 km. How long did the skier's trip
take?
Answer:
your answer is 12.3
Explanation:
hope it helps : )