3 years ago

The distance versus time graph for Object A and Object B are shown.

Physics

1 answer:

Scrat [10]3 years ago

7 0

Answer:

the 3rd one

Explanation:

You might be interested in

A uniform disk of mass 21 kg, thickness 0.5 m, and radius 0.6 m is located at the origin, oriented with its axis along the y axi

goldenfox [79]

Answer:

$29.69 kgm^2/s$

Explanation:

So suppose the axis of rotation is perpendicular to the surface of the disk, then the moment of inertia can be calculated as the following:

$I = mr^2/2 = 21 * 0.6^2/2 = 3.78 kgm^2$

We can convert the rotation speed in term of 0.8 seconds per revolution to the angular velocity knowing that each revolution is 2π

$\omega = 2\pi / 0.8 = 7.85 rad/s$

Then the rotational angular momentum of the disk is:

$\omega I = 7.85 * 3.78 = 29.69 kgm^2/s$

In case the axis of rotation is parallel with the surface, the moment of inertia would have a formula of:

$I = m(3r^2 + h^2)/12 = 21*(3*0.6^2 + 0.5^2)/12 = 2.3275 kg m^2$

5 0

3 years ago

an object which has a mass of 70 kg is sitting on a cliff 10 m high calculate the objects gravitational potential energy given g

Alex73 [517]

GPE = mgh (for objects close to earth where g can be considered to be constant) Where m is the mass, g is the acceleration due to gravity (which the question has told us to assume is 10ms^-2), and h is the height of the object.

Substituting the values in:
GPE = 70*10*10 = 7000J

5 0

3 years ago

What are all the invertebrates with a large foot

lyudmila [28]

Answer:

Explanation:

Bobbitt worm ( Eunice aphroditois). This segmented polychaete marine worm can attain lengths of 10 feet. It bristles...

Goliath beetle ( Goliathus species). African goliath beetle ( Goliathus giganteus ). Five species of goliath beetle...

atlas moth ( Attacus atlas). Stop and rest your eyes on this lovely...

5 0

4 years ago

which element, represented by x, reacts with fluorine to produce the compound xf2?(1) aluminum (3) calcium(2) argon (4) sodium

kramer

Accrording to me Mg should be that element because Magnesium forms divalent cations and is capable of accepting 2 anions such as Fluorine

8 0

3 years ago

Cody hits up food king and uses a scale to weigh the mass of an apple. if the spring potential energy in the scale is .09 j and

Lostsunrise [7]

Answer:

oK so here's what you should do is add .09 and 0.6

Explanation:

7 0

3 years ago