Beasy is driving in his car to take care of some errands. The first errand has him
driving to a coffee shop 2 km East and 6 km North of his starting location. Once he
completes that errand, he drives to a thrift store which is 4 km East of the first errand.
What is the displacement of the car from the starting point, rounded to the nearest
km?

Answer:

  a = -7.29 m / s²

Explanation:

For this exercise we must use Newton's second law,

          F -W = m a

Force is electrical force

         F = k q₁ q₂ / r²

         k q₁ q₂ / r² -mg = m a

indicate that the charge of the two spheres is equal

         q₁ = q₂ = q

         a = (k q² / r² - m g) / m

         a = k q² / m r² - g

Let's reduce the magnitudes to the SI system

        m = 0.19 g (1kg / 1000 g) = 1.9 10⁻⁴ kg

        q1 = q2 = q = -23.0 nC (1C / 10⁹ nC) = -23.0 10⁻⁹ C

        r = 10.0 cm (1m / 100cm) = 0.1000 m

let's calculate

        a = 9 10⁹ (23.0 10⁻⁹)² / (0.1000² 1.9 10⁻⁴) - 9.8

        a = -7.29 m / s²

The negative sign indicates that the direction of this acceleration is downward

Answer:

B) 18.5 m/

s west

Explanation:

Scalar quantity has MAGNITUDE only

Vector quantity has MAGNITUDE and DIRECTION

Hope this is correct and helpful

HAVE A GOOD DAY!

Answer:

system

Explanation:

I js took the test

Answer:

Lenses are very important for us. Without lenses even we can't imagine the world. Without lenses our life is like life without colors.

Explanation:

Lenses are used everywhere around us in car, truck, glass, headlamps etc. It is also present in the flashlight of the LED light that is used in electronic materials.

Our eyes have also most amazing lenses. When you look at ground, at sky, and staring at moon all that happen that because of our binocular lenses. Our eyes have two type of lenses that concave lenses and convex lenses.

By these lenses we can see far and near object6s easily. Thus we used special applications of lenses to see the objects.

Answer:

Period = 0.0167 seconds

Frequency = 60 Hz

Explanation:

Period: This can be defined as the time take by a wave to complete on cycle. The S.I unit is (s)

Frequency: This is the number of cycle completed by a wave. The S.I unit is (Hz)

From the question,

T = t/n................................... Equation 1

Where T = period, t = time take to complete n oscillation, n = number of oscillation.

Given: t = 1 seconds, n = 60.

Substitute these values into equation 1

T = 1/60

T = 0.0167 seconds.

Also,

F = 1/T........................... Equation 2

Where F = frequency

Given: T = 0.0167 seconds,

Substitute these value into equation 2

F = 1/0.0167

F = 60 Hz

Answer:

bromine

Explanation:

Any element in the halogen group will have seven valence electrons. These elements include fluorine, chlorine, bromine, iodine, and astatine

Answer:

Mercury is commonly used in barometers because its high density means the height of the column can be a reasonable size to measure atmospheric pressure.

Explanation:

Given that,

Velocity of boat, [tex]v_b=12\ m/s[/tex]

Velocity of current, [tex]v_c=4\ m/s[/tex]

(a) If the boat is traveling to the north and the current is to the south,

[tex]v_b=12j\ m/s[/tex]

[tex]v_c=-4j\ m/s[/tex]

The resultant velocity,

[tex]v_r=12-(4)=8\ m/s[/tex] due North

(b) If boat is traveling to the south and the current is to the south,

[tex]v_b=-12j\ m/s[/tex]

[tex]v_c=-4j\ m/s[/tex]

Resultant velocity,

[tex]v_r=12+4=16\ m/s[/tex] due south

(c) If the boat travels to the east, across the current, while the current is to the south.

So,

[tex]v_r=\sqrt{12^2+4^2}\\ \\v_r=12.64\ m/s[/tex]

Answer:

The object will sink in the liquid in beaker 1.

The object will float in the liquid in beaker 2

Explanation:

The density of an object relative to the density of a fluid determines if the object floats or sink in a fluid. The density of a material is the measure of the amount of mass of that material packed into a unit volume of that material.

For the beaker 1, the liquid in this beaker has a density of 0.5 g/cc, which is lesser than the density of the object (0.85 g/cc). This means that the object will add more mass than there should be to the volume of the space it displaces within the field. This results in the object sinking in the fluid.

For beaker 2, the liquid in this beaker has a density of 1 g/cc, which is more than the density of the object (0.85 g/cc). This means that the object will add less mass than there should be to the volume of the space it displaces within the field. This results in the object floating in the fluid.

Answer:

From what I see, it's saying that every minute, the ant can move 30 meters.  So how many meter would it move in 45 minutes?

30 meters = 1 min

x meters = 45 min

1 min x 45 = 45 min

30 meters x 45 = 1,350 meters

So, I believe the answer would be 1,350 meters.

hope this helps. :>

Answer:

A. cell walls

Explanation:

Plants have cell walls but animals dont.

Answer:

8 electrons in the third energy level

Explanation:

From the description,the third energy level has 8 electron (represented by the small green balls you describe)

Answer:

8

Explanation:

I gotcha fam

Answer:

Q no. 9: a

Q no. 10: d

Q no. 11: b

Answer:

karishma tanna

Explanation:

it is correct

Karishma Tanna was declared as the winner.

Answer:

time taken will be 6.24sec.

please follow me

Answer:

P=IV.

P=4×250=1000.

(1000/1000)kw×4.

1×4=4×10=40k.

Answer:

0 m/s or stationary

The seat in front of Lee appear to be at rest

Explanation:

When the motion of a person or object is found by comparing the person or objects motion with regards to a stationary object or an object in motion, the result is the relative motion of the person or object to the stationary or moving object

In the question, Lee is comparing the motion of the chair in front of him with regards to the motion of the chair he his sitting on.

The speed of both chairs are the same as the speed of the train in which they are attached.

Therefore, as the seats are fixed relative to each other such that there is no change in their relative position and therefore, no or 0 m/s relative velocity with each other.

Answer:

I think when the balloon is heated up the gas will expand making the balloon bigger. When things are heated up the molecules will get excited and expand. When they balloon is cooled then the it will retract.

Hope this helps! :)

Answer:

132

Explanation:

Answer: Please find the answer in the explanation

Explanation:

Under what circumstances does distance traveled equal magnitude of displacement?

When a body's motion is linear in one direction. Or a body moving in a straight line without turning back.

What is the only case in which magnitude of displacement and distance are exactly the same?

When the body is moving in a straight line with without changing direction or without turning back.

Answer:

ion no

Explanation:

cuz i dont

Answer:

It is the SPEED of an object.

Explanation:

Answer:

The speed of the bag just before it reaches the ground is 21.71 m/s.

Explanation:

The speed of the bag can be found using the following equation:

[tex] v_{f}^{2} = v_{0}^{2} - 2gy [/tex]

Where:

[tex]v_{f}[/tex] is the final speed =?

[tex]v_{0}[/tex] is the initial speed = 7.7 m/s

g: is the gravity = 9.81 m/s²

y: is the height = 21 m

[tex]v_{f}^{2} = v_{0}^{2} - 2gy = (7.7 m/s)^{2} - 2*9.81 m/s^{2}*(-21 m) = 471.31 m^{2}/s^{2}[/tex]

[tex]v_{f} = 21.71 m/s[/tex]

Therefore, the speed of the bag just before it reaches the ground is 21.71 m/s.

I hope it helps you!    

Answer:

2.33 × 10^6

hope this helps.

Answer:

2.33 x 106

Explanation:

it is right promise

Answer:

Displacement = 20

Direction = westward

Explanation:

Given that a football coach walks 18 meters westward, then 12 meterseastward, then 28 meters westward, and finally 14 meters

eastward.

To calculate the displacement,

Let eastward = negative

Westward = positive

Displacement = 18 - 12 + 28 - 14

Displacement = 46 - 26

displacement = 20 metre

Since the answer is positive, the direction is westward.

Answer:

Choice A) A Animal cell

Explanation:

Answer:

A.

Explanation:

Answer:

No it’s 1,130

Explanation:

I did online

First picture (black background):  50 Newtons UP

Second picture (white background):  30 Newtons RIGHT

The correct answer is 2.8s