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3 years ago

Balanced equations account for the conservation of mass.

Physics

2 answers:

marusya05 [52]3 years ago

7 0

Answer:

True

Explanation:

A balanced equation demonstrates the conservation of mass by having the same number of each type of atom on both sides of the arrow

uranmaximum [27]3 years ago

6 0

Answer:

fff

Explanation:

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a race car accelerates uniformly from 18.5m/s to 46.1m/s in 2.4 seconds. determine the acceleration of the car and the distance

8_murik_8 [283]

The car's (average) acceleration would be

$a=\dfrac{46.1\,\frac{\mathrm m}{\mathrm s}-18.5\,\frac{\mathrm m}{\mathrm s}}{2.4\,\mathrm s}=11.5\,\dfrac{\mathrm m}{\mathrm s^2}$

The car's position over time would be given by

$x=v_0t+\dfrac12at^2$

so that after 2.4 seconds, the car will have traveled a distance of

$x=\left(18.5\,\dfrac{\mathrm m}{\mathrm s}\right)(2.4\,\mathrm s)+\dfrac12\left(11.5\,\dfrac{\mathrm m}{\mathrm s^2}\right)(2.4\,\mathrm s)^2$

$\implies x=77.5\,\mathrm m$

7 0

3 years ago

Read 2 more answers

Displacement is which of the following types of quantities?A. vectorB. scalarC. magnitudeD. dimensional

agasfer [191]

Answer: A. vector

Explanation:

Movement is the change of position of a body at a certain time. The body that experiences this change of position is called mobile.

In this sense, the displacement is the distance in a straight line between the initial and final position of this mobile, which differentiates it from the trajectory, which is the path followed by the body in its movement and a scalar magnitude.

Hence, the displacement is a vector.

6 0

3 years ago

Katie, a 40 kg child, climbs a tree to rescue her cat who is afraid to jump 9.4 m to the ground. How much work does Katie do to

Diano4ka-milaya [45]

Answer:

The work done by the child to reach the cat is, W = 3684.8 J

Explanation:

Given data,

The mass of the child, m = 40 kg

The height of the cat from the ground, h = 9.4 m

The force acting on the child due to gravitational force is,

F = mg

The minimum force required by the child to climb the tree against the gravitational force is,

F = mg

Hence, the work done by the child is,

W = F · h

= 40 x 9.8 x 9.4

= 3684.8 joules

Hence, the work done by the child to reach the cat is, W = 3684.8 J

4 0

3 years ago

________ is the name for when a director decides where and when performers move and position themselves on the stage.

Maurinko [17]

Answer:

Blocking/staging

Explanation:

Blocking/staging is the name for when a director decides where and when performers move and position themselves on the stage.

Moreover, Blocking a dream sequence is merely "working on the details of an actor's movements with regard to the camera." We can also reckon of blocking as the dance routines of a dance or a ballet: all the components on the set must move in perfect sync with one another (performers, extras, automobiles, crew, machinery).

5 0

3 years ago

can cuclin concentration durng mitosis be explained by the fact that the cell divides in two and thus divides the material in th

lana [24]

Answer: No

Can the change in cyclin concentration during mitosis be explained by the fact that the cell divides in two and thus divides the material in the cell into two smaller volumes?

Explanation: The cyclin concentration is not halved but degraded during mitosis.

There is an increase in cyclin concentrations at interphase. These changes are caused by the presence of Cyclin Dependent Kinase (CDK) complexes. CDK being a substrate of cyclin catalyses cyclin, thereby increasing its concentration. During mitosis, cyclins are destroyed, signifying the end of mitosis and cytokinesis.

Without this process, it will be impossible for the cell to exit mitosis.

5 0

3 years ago