Using the Arc length formula s = r θ, find the missing variable. Find r when s = 26.4 and θ = 3π/2.

A) 39.6/ π
B) π /17.6
C) 17.6/ π

Answer: a

The wagon appears as a red color because red light is reflected.

:)

Answer:

Your answer would be 28,000 N (newtons).

Explanation:

We'd simply get this by using the formula:

force = mass × acceleration

The information that we have from the question is that the force is 800 times 35.

Now, all we have to do is multiply 800 by 35, and we have our answer of 28,000 N.

I hope I helped, and a Brainliest is always appreciated! ☺

Answer:    mass and speed.

Explanation:       The two main factors that affect kinetic energy are mass and speed. Why? Because the motion of an object depends on how fast it's traveling.

Answer:

The mass is essentially "how much stuff" is in an object. ... Weight: There is a gravitational interaction between objects that have mass. If you consider an object interacting with the Earth, this force is called the weight. The unit for weight is the Newton (same as for any other force)

Explanation:

Answer:

A

Explanation:

if it was in the same place it wold be a pattern which is what is usually seen in orbits

Answer:

2.3 m/s2

Explanation:

F = ma

a = F/m

a = 10.8 / 4.6

a = 2.3 m/s2

I hope this helps.

Answer:

I think it would increase sorry if I'm wrong

Answer:

b

Explanation:

→ 0.6 N = 0.04 kg × a

→ 0.6 kg.m/s² ÷ 0.04 kg = a

→ 15 m/s² = a

Therefore, tha magnitude of resulting acceleration is 15 m/s².

Answer:

2,7 km

Explanation:

You should remember from theory that

[tex]s=s_0 + v_0\Delta t + \frac12 a(\Delta t)^2[/tex]. Let's substitute values, remembering that we are interested in the difference in position [tex]\Delta s = s-s_0[/tex]

[tex]\Delta s = 60(30) +\frac12 2 (30)^2 = 2700m[/tex]

Answer:

it's average acceleration is 12 mph

Answer:

F = 300 N

Explanation:

This is an example of Newton's second Law

F = m * a

F = ?

m = 15 kg

a = 20 m^2

F = 20 * 15

F = 300 Newtons.

Answer:

true

Explanation:

Answer: its true btw :(

Answer:

R = K L / A        resistance proportional to length and inversely proportional  

to area

R2 / R1 = A1 / A2 = A1 /  (4 A1) = 1 / 4

R2 = R1! / 4

Answer:

In chemistry, according to Boyle's law it tells us that the pressure and volume of an ideal gas are inversely proportional. The pressure has an inverse relationship with the volume. As the volume increases two times, then the pressure of the gas decreases two times.

Explanation:

Answer:

Go to high ground, as high as possible.

Answer:

[tex]\eta = 0.8 = 80\%[/tex]

Explanation:

Efficency of a machine is defined as the ratio of "useful" energy over the total energy imput in it. In this case a kettle wants to heat water, so thermal energy is what we need; if we wanted to build some kind of music instrument, we would be looking at the energy generating vibrations.

[tex]\eta = \frac{1200J}{1500J} = 0.8[/tex]

Answer:

LETTER C IS THE ANSWER

Explanation:

this is my answer

The acceleration of the particle at the given charge, electric field and mass is [tex]\frac{qE}{m}[/tex].

The given parameters;

The acceleration of the particle is calculated as follows;

Newton's second law : F = ma

Coulomb's force: F = qE

Equate the two forces as follows;

[tex]ma = qE\\\\a = \frac{qE}{m}[/tex]

Thus, the acceleration of the particle at the given charge, electric field and mass is [tex]\frac{qE}{m}[/tex].

Learn more about Coulomb's force here: https://brainly.com/question/15379673

Answer:Fricition

Explanation: It is fricition in the net force

A car is speeding up with a force of 120 mph and heading east. The force of friction acts against the car with a force of 80 N westward, and the net force acting on the car is 40 N eastward, which means the car is accelerating eastward with a force of 40 N.

To calculate the net force acting on the car, one needs to consider the direction and magnitude of the forces acting on it. A force of 120 N to the east is acting to accelerate the car in that direction, and a force of 80 N to the west is acting to oppose the motion of the car.

Net force = force of acceleration -force of friction.

Net force = 120 N east- 80 N west.

Net force = 40 N East

Hence, the net force acting on the car is 40 N eastward, which means the car is accelerating eastward with a force of 40 N.

Learn more about the calculation of net force here.

https://brainly.com/question/13410291

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Answer:d

Explanation:

Answer:

Planets generally follow elliptical orbits.

The eccentricity describes the ellipticity of the orbit, that is, the departure of an orbit from a circular orbit.

Answer:

b because it's b so pick b

Answer:

if it is not moving it is zero, like all things that aren't in motion

Explanation:

Answer:

Note that net force on the bottle is zero.

Explanation:

Answer:

C

Explanation:

y0=100 m

y=0

x0=0

x=?

v0x=10 m/s (moving horizontally)

v0y=0

x=x0+v0xt

x=10t

y=y0+1/2at^2

solve for t

0=y0-1/2gt^2

(a is acceleration which is - gravitational acceleration )

t=[tex]\sqrt{\frac{2y0}{g} }[/tex]

plug into x equation

x=10([tex]\sqrt{\frac{2y0}{g} }[/tex]) where y0=100m and g=9.80 m/s^2

x= 45.2 m

if you check the distance when v0=5 m/s, we get x=22.5 m so the equation is correct. however if the g your class uses is 10.00 m/s^2, then we get x=22.4 for the first velocity and 44.7 for the second velocity

Answer:

400kj

Explanation:

h =mass × specific heat capacity × change in temperature

= 2×2000×[120-20]

=2×2000×100

=400000j

=400kj

400kj of energy is needed.

Formula - h = mass × specific heat capacity × change in temperature

So,

[tex]2[/tex] × [tex]2000[/tex] × [tex][120-20][/tex]

[tex]2[/tex] × [tex]2000[/tex] × [tex]100[/tex]

[tex]=400000j\\=400kj[/tex]

Therefore, 400kj of energy is needed.

Know more about energy here:

https://brainly.com/question/13881533

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Answer: Scientific Hypothesis

Explanation: A scientific hypothesis is something supported or approved by a line of scientists through experiments and close observations.

Answer:

secondary colours yeah

The force applied to pull the box up the ramp acts parallel to the incline is 8N

The force applied to pull the box is expressed as:

[tex]F_N = F_m + F_f[/tex]

Fm is the moving force

Ff is the force of friction

Get the moving force and frictional fice

[tex]F_m = 10sin30^0 = 5N\\F_f = 3N[/tex]

The force applied to pull the box up the ramp acts parallel to the incline = 5N + 3N  = 8N

Hence the force applied to pull the box up the ramp acts parallel to the incline is 8N

Learn more here: https://brainly.com/question/17219637

Answer:

5.1m

Explanation:

Use the fourth key equation of accelerated motion

vf^2=vi^2+2aΔd

we know vf is = 0 because that is when the ball reaches it's peak (not going up anymore)

0=vi^2+2aΔd

and we can rearrange for Δd, which is what you need

-vi^2=2aΔd

Δd = -vi^2/2a

Now we can plug in the values

Δd = -vi^2/2a

Δd = -(10m/s)^2/2(-9.8)

Δd = -100/-18.6

Δd = 5.10m