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3 years ago

Carbon and oxygen combine chemically to form carbon dioxide. This means that carbon dioxide is a ________.

Physics

2 answers:

AlekseyPX3 years ago

7 0

It is a chemical compound

AlexFokin [52]3 years ago

7 0

Carbon dioxide is a compound which is done by the elements carbon and oxygen chemically joined together

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Can two charged

miss Akunina [59]

Answer:

yes they can,

Electrostatic forces are non-contact forces; they pull or push on objects without touching them. Rubbing some materials together can result in something called 'charge' being moved from one surface to the other.

Explanation:

example: the opposite ends of magnets

hope this helps! have a wonderfull day!

3 0

3 years ago

An automobile traveling 95 km/h overtakes a 1.30-km-long train traveling in the same direction on a track

BartSMP [9]

1) 234 s, 6.18 km

The position of the car at time t is described as

$x_c(t) = v_c t$

where

$v_c = 95 km/h$ is the velocity of the car

The position of the head of the train instead is given by

$x_t(t) = d + v_t t$

where

d = 1.30 km is the initial distance between the car and the head of the train

$v_t = 75 km/h$ is the velocity of the train

The car overtakes the train when

$x_c =x_t$

Substituting and solving for t,

$v_c t = d + v_t t\\t(v_c-v_t)=d\\t=\frac{d}{v_c-v_t}=\frac{1.30}{95-75}=0.065 h = 234 s$

And the distance travelled by the car is

$x_c = v_c t = (95 km/h)(0.065 h)=6.18 km$

2) 27.5 s, 0.72 km

In this case, the train is travelling in opposite direction, so we can write

$v_t = -75 km/h$

Again, we can use the same equation as before

$x_c =x_t$

And solving for t, we find

$v_c t = d + v_t t\\t(v_c-v_t)=d\\t=\frac{d}{v_c-v_t}=\frac{1.30}{95+75}=0.0076 h = 27.5 s$

And the distance travelled by the car is

$x_c = v_c t = (95 km/h)(0.0076 h)=0.72 km$

5 0

3 years ago

A loop is oriented perpendicular (0 deg) to a 0.0817 T magnetic field. The magnetic flux through the loop is 5.90 x 10^-6 Wb. Wh

blondinia [14]

Answer:

area is 7.22×10^-5 m^2

Explanation:

let B be the magnetic field strength, A be the area of the skip the pool.

8 0

3 years ago

Speeding truck slams on the brakes and accelerates at -7.40m/s^2 Before coming to a stop. It leaves skid marks on the pavement t

cluponka [151]

Answer:

25.2563 m/s

Explanation

This is the equation needed

$$v^2 = u^2 + 2ad$ where v is the final velocity, u is the initial velocity, a is the acceleration, and d the distance$

So Just plug in!

6 0

3 years ago

8. You push downward on a box with a force of 750 N. The box is on a flat horizontal surface for which the coefficient of static

natima [27]

Answer:

The mass of the heaviest box you will be able to move with this applied force = 61.4 kg

Explanation:

From the diagram attached, the forces acting on the box include the weight of the box, applied force on the box, normal reaction of the surface on the box and the Frictional force in the opposite direction to the applied force.

For the box to be able to move, the applied force must have a horizontal component that at least matches the Frictional force between the box and the surface. This is the force balance in the horizontal direction.

Resolving the applied force into horizontal and vertical components,

Fₓ = 750 cos 25° = 679.73 N

Fᵧ = 750 sin 25° = 316.96 N

Doing a force balance in the vertical axis,

N = (mg + 316.96)

Frictional force = μN = μ (mg + 316.96)

μ = 0.74, g = 9.8 m/s²

Frictional force = Fᵧ

μ (mg + 316.96) = 679.73

0.74(9.8m + 316.96) = 679.73

7.252m + 234.5504 = 679.73

7.252m = 679.73 - 234.5504 = 445.1796

m = (445.1796/7.252)

m = 61.4 kg

Hope this Helps!!!

6 0

3 years ago