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3 years ago

If you are given force and time, you can determine power if you can know

2 answers:

8 0

The answer would be A, because power is defined as the rate of doing work. Hence power = work / time then you obtain watts. Work is the product of force and displacement (distance). Hence in formula, w = F x s.

Mamont248 [21]3 years ago

4 0

Answer:

joules/energy.

Explanation:

power is defined as the rate of work. Hence power=work/time, then you obtain Watts.

Work is the product of force and displacement.

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Maru [420]

In exothermic/exergonic reactions, reactants have greater energy(Gibbs-Free Energy) than the products. This energy determines how much mechanical work a system can do

5 0

3 years ago

Which best describes the current atomic model?

Lorico [155]

<span>A: It is not an exact representation of the atom, but is close enough to be very useful.

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3 0

3 years ago

Read 2 more answers

A few years ago, the legal speed limit on the Turner Turnpike was changed from 55.0 mi/h to 75.0 mi/h.

lukranit [14]

The amount of time saved on the 86.0 mile trip from Tulsa entrance to Oklahoma City is 0.42 hours

Time is the measurement of a past, present, or future event. The S.I unit of time is seconds (s)

To get the time that was saved on the 8.6-mile trip, we use the formula below.

Formula:

Ts = (d/v₁)-(d/v₂)................. Equation 1.

Where:

Ts = Time saved on the trip
d = distance covered during the trip
v₁ = Initial legal speed limit
v₂ = final/current legal speed limit.

From the question,

Given:

d = 86.0 mile
v₁ = 55.0 mi/h
v₂ = 75.0 mi/h

Substitute these values into equation 1

Ts = (86/55)-(86/75)
Ts = 1.564-1.147
Ts = 0.42 h.

Hence, The amount of time saved on the 86.0 mile trip from Tulsa entrance to Oklahoma City is 0.42 hours.

Learn more about time here: brainly.com/question/13893070

6 0

3 years ago

List at least 3 units of speed circle the unit of speed which is the SI unit

Stells [14]

Answer: SI Unit is meters per second(m/s)

Explanation:

The three units of speed are:

1. meters per second(m/s)

2. kilometers per hour(km/hr)

3. miles per hour(mph)

SI Unit is meters per second(m/s)

6 0

3 years ago

A box of books weighing 325N moves at a constant velocity across the floor when the box is pushed with a force of 425 N exerted

iragen [17]

Answer:The coefficient of kinetic friction is 0.61

Explanation:A state of constant velocity connotes an acceleration equal to zero {this is evident from Acceleration=(final velocity-initial velocity)/time}

Consequently,a balanced forces system is attained

Force of pulling

F(x)=F×cosα=425N×0.817=347N

is equivalent to the resistance force.

F=U(k)×(Fw+Fsinα)=U(k)×(325N+425N×0,576)=U(k)×570N

Note; U(k) is the coefficient of kinetic friction

Equating the two force components,

The coefficient of static friction ×570N= 347N

The coefficient of static friction = 347N/570N

The coefficient of static friction =0.61

Please note that the coefficient of static friction is dimensionless .

This is as a result of the same unit of forces whose division resulted in the determination of the coefficient of kinetic friction.

5 0

4 years ago