Answer:
Left
Explanation:
The force is applied opposite of the acceleration.
A car accelerates from rest at a rate of 4 m/s’2 . How many seconds will it take the car to reach a final speed of 16m/s
Answer:
t = 4 [s]
Explanation:
To solve this problem we must use the following equation of kinematics.
[tex]v_{f}=v_{o}+a*t[/tex]
where:
Vf = final velocity = 16 [m/s]
Vo = initial velocity = 0
a = acceleration = 4 [m/s²]
t = time [s]
Now replacing:
[tex]16=0+4*t\\t = 16/4\\t = 4[s][/tex]
A dog walks a distace of 100 ft in 20 s of time. What is the dogs speed in feet per second
Answer:
5 sec
Explanation:
If a rock is thrown into a still pond creating ripples in the water, does this situation represent a transfer of kinetic energy?
properties can be used to distinguish and separate substances.
Answer:
true
Explanation:
a disk initially at rest rotates with constant angular acceleration through an angel of 50 rad in 5 sec find the angular speed of the disk just after 3 sec. please step by step
Recall the formula,
∆θ = ω₀ t + 1/2 α t ²
where ∆θ = angular displacement, ω₀ = initial angular speed (which is zero because the disk starts at rest), α = angular acceleration, and t = time. Solve for the acceleration with the given information:
50 rad = 1/2 α (5 s)²
α = (100 rad) / (25 s²)
α = 4 rad/s²
Now find the angular speed ω after 3 s using the formula,
ω = ω₀ + α t
ω = (4 rad/s²) (3 s)
ω = 12 rad/s
A particle is launched at an angle of 37° from horizontal. If the horizontal velocity component is 7.65 meters/second, what is the resultant velocity of the particle?
Answer:
R = 9.58 m/s
Explanation:
cos(37) = (7.65 m/s)/R
R = (7.65 m/s)/cos(37)
R = 9.58 m/s
A Red-Tailed Hawk leaves its nest and flies 100.0 meters across the sky in 20 seconds, when it spots a garter snake on the ground below. It then flies 50.0 meters in 5.0 seconds to catch the snake. What was the hawk's average speed over his entire journey?
Answer:
7.5 m/s
Explanation:
A red tailed hawk leaves its nest and flies 100 meters across the sky in 20 secs
Speed 1= distance/time
= 100/20
= 5m/s
When it spots a garter snake on the ground it flies 50 meters in 5 secs
Average speed= distance /time
= 50/5
= 10 m/s
Therefore the average speed of the hawk over the entire journey can be calculated as follows
= 10+5/2
= 15/2
= 7.5 m/s
Clara's grandfather is a captain of a cargo ship. He prefers to navigate his ship through the moderate neap tides. At these times, the line between Earth and the sun is at a right angle to the line between Earth and the moon. Which phase or phases of the moon describe this alignment?
Answer:
The phases are the first and third quarters.
Explanation:
During the first quarter of the moon phases, the line between Earth and the Sun is at a right angle to the line between Earth and the moon. At this time the moon has completed the first quarter of its orbit around the earth. At this point, half of the moon is fully reflecting light from the sun.
Also during the third quarter which is the last quarter, the line between the earth and the sun is at a right angle to the line between the earth and the moon. This is the time when the second half of the moon which was not illuminated during the first quarter becomes completely illuminated.
How many molecules of water are found in this formula--6H2O?
Answer:
6 the number infront of H2O is the amount of molecules it is
Explanation:
How Negative Points Works
btw help me with this
How much does the sky weigh?
Answer:
it weighs 237469812734t7162341873498273417234321476281736481273648123764812736481723648273648137468127364872364 million pounds :)
Explanation:
Answer:
This is a dumb question.
Explanation:
The 'sky' does not weigh anything.
What is the value of x in the equation 8+ 4 = 2 (x-1)
Answer:
mgi
Explanation:
Answer: x = 7
Explanation: 12 = 14 -2 = 12.
Describe the particle motion of a longitudinal wave. Which type of medium (state of matter) would best carry them.
A: Solid
B: Liquid
C: Gas
Answer:
A solid
Explanation:
Hope this helped, Have a Great Day!!
Longitudinal waves can be produced in all the three states of matter.
What is meant by longitudinal wave ?Longitudinal waves are the type of waves, in which the particles are travelling in the same direction of propagation of the waves.
Here,
The longitudinal waves are mechanical waves, which requires a medium for propagation.
The longitudinal waves have two components called compression and rarefaction.
The particles in the longitudinal waves can travel through all the phases such as solids, liquids and gases. These waves can be produced in all these states of matter.
Hence,
Longitudinal waves can be produced in all the three states of matter.
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URGENT ANSWER ASAP PLEASE
What is the relationship between memory and learning? Memory and learning are the same process. Memory is more important than learning. Memory is the foundation of all learning. Memory outlasts learning
Answer:
learning and memory are very closely related concept . Learning is the acquisition of silk or knowledge, while memory is the expression of what you've acquired.Another difference is the speed with which the two things happen if you acquire the new skill or knowledge slowly and laboriously, that's learning
Answer: I took a test that had this question and the answer was Memory is the foundation of all learning. I hope this helps
How long would a circuit be connected to produce a current of 0.65 A with a charge of 380 C?
Answer:
what grade are you dude
Which of the following is extrusive? Lava, Magma, Laccolith, Batholith.
Answer:
lava
Explanation:
what is the main reason why people use machines
Answer:
Machines are faster and more efficent
Explanation:
Answer: Machines makes work easier and save some time and is very fast. For example, an elder can't walk or stand very long, so people made a motorized wheelchair!
Explanation:
i dont know what subject this is sorry but it would help if someone could answer this
PLEASE HELP URGENT 1. You put 1 gram of salt into 1 liter of water and stir. The resulting liquid is an example of
A. A pure substance.
B. a homogeneous mixture.
C. a heterogeneous mixture.
D. an immiscible mixture.
What is the SPEED of a ball that travels 120 m in 6s?
Answer:
20m/second
Explanation:
The reason the answer is 20m/second is because to find the speed of the ball in this question you have to divide the distance over the time giving you the result of 20m/second
1. A record with a radius of 0.3m spins in a clockwise circle with a centripetal
acceleration of 4.7 m/s2. How long does it take the record to make one revolution?
(Hint: Find tangential velocity first!)
Solve for the linear/tangential speed:
a = v²/r
where a = centripetal acceleration, v = speed, and r = radius.
4.7 m/s² = v²/(0.3 m)
v² = (0.3 m) (4.7 m/s²)
v ≈ 3.96 m/s
For every time the record completes one revolution, a fixed point on the edge of the record travels a distance equal to its circumference, which is 2π (0.3 m) ≈ 1.88 m. So if 1 rev ≈ 1.88 m, then the angular speed of the record is
(3.96 m/s) (1/1.88 rev/m) ≈ 7.46 rev/s
Take the reciprocal of this to get the period:
1 / (7.46 rev/s) ≈ 0.134 s/rev
So it takes the record about 0.134 seconds to complete one revolution.
How much resistance allows 6V battery to produce a current of 0.006 amps?
Answer:
It produces 1000Ω.
Explanation:
You have to apply Voltage formula, V = I × R :
V = I × R
6 = 0.006 × R
R = 6 ÷ 0.006
R = 1000Ω
We have that from the Question"How much resistance allows 6V battery to produce a current of 0.006 amps?" it can be said that How much resistance that allows 6V battery to produce a current of 0.006 amps is
R=1000 ohms
From the Question we are told
How much resistance allows 6V battery to produce a current of 0.006 amps?
Generally the equation for Resistance mathematically given as
[tex]R=\frac{V}{I}\\\\\Therefore\\\\R=\frac{V}{I}\\\\R=\frac{6}{0.006}\\\\[/tex]
R=1000 ohms
Therefore
How much resistance that allows 6V battery to produce a current of 0.006 amps is
R=1000 ohms
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1. A car has a mass of 400 kg and is driving down a hill at 2 m/s/s. What is the force of the car?
Answer:
l think the right answer is 4720
will get brainless if the answer is correct
Answer:
in case of a car crash they will prevent you from flying out of your seat (not litteraly) and keep you safer than what you would be without them!
Explanation:
to keep you safe (simple answer lol)
What might happen if you were in a braking car and you weren’t wearing your seatbelt?
Answer:
well it depends on how fast for short its B
Explanation:
Which of the following is NOT an example of convection?
Answer:
HEAT?
Explanation:
A person gets a suntan on a beach is not an example of convection. Therefore, the correct option is option C.
What is convection?The process of convection involves the movement of such a heated fluid, including such air or water, in order to transfer heat. Natural convection is caused by the fact that most fluids have a propensity to expand when heated, becoming less dense and rising due to the increased buoyancy.
Natural convection is caused by the fact that most fluids have a tendency to expand when heated, becoming less dense and rising due to the increased buoyancy. The air inside a heated room or the water inside a kettle are heated uniformly thanks to circulation brought on by this effect. A person gets a suntan on a beach is not an example of convection.
Therefore, the correct option is option C.
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Your question is incomplete but most probably your full question was,
Which one of the following is not an example of convection?
a) Smoke rises above a fire.
b) An eagle soars on an updraft of wind.
c) A person gets a suntan on a beach.
d) Spaghetti is cooked in water.
e) An electric heater warms a room.
Why does a heavy chair not move by itself? ?
A baseball is thrown at an angle of 22◦ relative to the ground at a speed of 24.8 m/s. The ball is caught 43.5518 m from the thrower. The acceleration due to gravity is 9.81 m/s^2
How long is it in the air?
Answer in units of s.
How high is the tallest spot in the ball’s path?
Answer in units of m
Answer:
12 seconds in the air
2.5
very high
132
Explanation:
Which of the following is not an example of acceleration?
A) A person jogging at 3 m/s along a winding path
B) A car stopping at stop sign
C) A cheetah running 27 m/s east
D) a plane taking off
Find the speed of a wave with wave length 650 M and a frequency 35HZ
help.
Answer:
option A
Explanation:
wave speed= 650×35= 22750 m/s
hope it helps !
Answer:
option is the correct answer mark me as a brain list pls
F = m x a. A ball of mass 0.35kg rolls on a smooth surface hits another object at rest and of mass 7kg. The second object gets an acceleration of 1.5m/s2. What acceleration does the ball get? Use newton’s third law.
Please show the working and thankyouu!!
Answer:
The acceleration the ball gets = 30 m/s²
Explanation:
The given parameters are;
The mass of the first ball that hits an object, m₁ = 0.35 kg
The mass of the object hit by the ball, m₂ = 7 kg
The acceleration given to the second object, a₂ = 1.5 m/s²
Let the a₁ represent the acceleration the ball gets
Newton's third law states that action and reaction are equal and opposite, therefore, the force exerted on a body A by a body B is equal to the force exerted on the body B by the body A;
Therefore, we have;
The force exerted on the object, F₂ = m₂ × a₂ = 7 × 1.5 = 10.5 N
The force the ball exerts on the object = F₁ = m₁ × a₁ = 0.35 × a₁
By Newton's third law, F₁ = F₂, which gives;
m₁ × a₁ = m₂ × a₂
0.35 × a₁ = 10.5
a₁ = 10.5/0.35 = 30
The acceleration the ball gets = a₁ = 30 m/s².