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3 years ago

A trolley is pushed with a force that causes it to move a certain distance. It moves in the

Physics

1 answer:

sineoko [7]3 years ago

3 0

Answer:

Row D ; 280 Nm

Explanation:

Workdone is the product of the force applied and the distance moved. This means :

Workdone = Force * distance

For each of rows A to D:

Row A :

Workdone = 20 N * 20m = 400 Nm

Row B :

Workdone = 40 N * 10m = 400 Nm

Row C :

Workdone = 50 N * 6m = 300 Nm

Row D :

Workdone = 70 N *4m = 280 Nm

From the result obtained above, the smallest amount of workdone on the trolley is given in Row D ; which is 280Nm

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If Home Depot, Delta Faucets, and Armstrong Floor Coverings pay for a television show about remodeling a kitchen on the Home and

Lyrx [107]

Answer:

The options for this question are:

A) buying time spots for

B) purchasing network time for

C) creating infomercials for

D) sponsoring

E) advertising

The correct answer is D) sponsoring .

Explanation:

Sponsorship is an advertising strategy that consists of an organization (sponsor) committing to provide financing to a third party (sponsored) in exchange for the presentation of its brand or product.

The sponsorship consists of an agreement or agreement between two people (legal or physical) in which, one of the parties called sponsor, will deliver a consideration (monetary or material) to another sponsored call, so that the latter exposes its brand or product publicly.

Sponsorship Objective

Sponsorship is a subtle form of advertising where the company seeks that customers associate their brand with an activity or person that represents values or qualities that attract their customers. These activities or people are usually outside the scope of the normal activity of the company, for example: a prestigious event, an admired athlete or the celebration of a relevant event, etc.

The ultimate goal of sponsorship is to attract customers and increase sales.

7 0

3 years ago

Read 2 more answers

Energy of a SpacecraftVery far from earth(at R=\infty), a spacecraft has run out of fuel and its kineticenergy is zero. If only

Firdavs [7]

Answer:

$s_e=\sqrt{\frac{2GM_e}{R_e^2}}$

Explanation:

In this case mechanical energy is conserved, which means that the sum of the initial kinetic energy and initial potential gravitational energy will be equal to the sum of the final kinetic energy and final potential gravitational energy:

$K_i+U_i=K_f+U_f$

Which in our case will be:

$\frac{mv_i^2}{2}+\frac{-GM_em}{r_i^2}=\frac{mv_f^2}{2}+\frac{-GM_em}{r_f^2}$

Which, since $v_i=0m/s$ , $r_i=infinity$ , $r_f=R_e$ , $v_f=s_e$ and canceling m means that:

$\frac{s_f^2}{2}=\frac{GM_e}{R_e^2}$

Solving for the final velocity we get:

$s_e=\sqrt{\frac{2GM_e}{R_e^2}}$

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3 years ago

Pressure is about 1000 hPa at sea level and about 500 hPa at an altitude of 5.5 km. Why doesn’t this vertical pressure gradient

saul85 [17]

Answer:

A. The upward pressure gradient force is balanced by gravity.

Explanation:

A. is correct because the pressure difference is actually generated by gravity. As in the following formula for the pressure at different points:

$p = p_0 + \rho g h$

where $p, p_0$ are the pressure at 2 points, ρ is the density of the fluid, g is the gravitational constant, and h is the height difference.

B is incorrect because friction in air is too small to make an effect.

C is incorrect because the Coriolis force is horizontal, not vertical.

D is incorrect because a difference of 500 hPa = 50000 Pa, this is half of the atmospheric pressure.

E is incorrect because temperature cannot generate force.

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3 years ago

Define reference point plz help me

xeze [42]

Answer:

a basis or standard for evaluation, assessment, or comparison; a criterion.

Explanation:

Definition of reference point. : something that is used to judge or understand something else The professor used the study as a reference point for evaluating and discussing other theories.

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3 years ago

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A migrating bird flew across a lake at an average speed of 18 meters per second. Was the distance that the bird flew across the

Natasha_Volkova [10]

Answer:

It cannot be said with 100% guarantee.

Explanation:

Since bird is travelling with 18 meters per second, that means that it covers a distance of 18 meters in 1 second.

for part 1 we convert 20 minutes into seconds, thus, 20 * 60 = 1200 seconds.

Distance covered in 1200 seconds will be:

S = v * t (S is distance , v is speed, t is time)

18 * 1200 = 21600 meters = 21.6 Kilometers

If the bird took less than 20 minutes than distance covered would be less than 21.6 Kilometer which could be greater than or lesser than 21 Kilometers. On average we can say that the distance bird travelled will be less than 21 Kilometer. But it is not definite.

For part B convert 0.4 hours into seconds to find the distance it travelled.

0.4 * 60 * 60 = 1440 seconds

Distance covered will be

18 * 1440 = 25920 meters = 25.9 Kilo meters.

Again, if the bird takes less than 0.4 hours to cover the lake, the lake will be less than 25.9 kilometers long. This means that it could be greater than or lesser than 21 kilometers. It cannot be definitive

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4 years ago