All categories

4 years ago

El conductor de un coche de 650 kg que va a 90 km/h frena y reduce su

1 answer:

7 0

A. 90km/h = 25 m/s
W=1/2mv^2
=1/2* 650* 25^2
= 203125(J)
b. v’= 90-50= 40km/h
= 100/9 m/s
W=1/2mv^2
=1/2*650*(100/9)^2
= 40123,45679

You might be interested in

What kingdom (Plantae, Fungi, Animalia, or Protista) does each organism belong to? (no links)

Kitty [74]

Answer:

Plantae: herbs, plants, trees, bushes, grass....

Fungi: yeasts, molds, mushrooms

Animalia: all animals (not prokaryotes nor protists)

Protista: amoebae, red algae, dinoflagellates, diatoms, euglena, and slime molds

6 0

3 years ago

Read 2 more answers

With fuel prices for combustible engine automobiles increasing, researchers and manufacturers have given more attention to the c

Alinara [238K]

Answer:

Then the difference of weight between the two cars are:

Δw = 14210 - 5292 = 8918 N

Explanation:

An object's weigh due to the gravitational attraction force of the earth is:

w = mg

Where: m is the object's mass

g is the gravitational acceleration in the surface earth

g = 9.8 m/s2

The the ultralight car's weight is:

$w_{uc} = (540)(9.8)$

$w_{uc} = 5292 N$

And the Honda Accord's weight is:

$w_{HA} = (1450)(9.8)$

$w_{HA} = 14210 N$

Then the difference of weight between the two cars are:

Δw = 14210 - 5292 = 8918 N

4 0

4 years ago

If you add a light bulb to the circuit, the filament in the bulb will resist the flow of

Leno4ka [110]

Answer:

Light and heat!

Explanation:

This is correct<3

8 0

3 years ago

Read 2 more answers

The number of kilograms of water in a human body varies directly as the mass of the body. Upper AA 9393-kg person contains 6262

Pie

Answer:

54 kg

Explanation:

Mass of person = 93 kg = $m_p$

Mass of water = 62 kg = $m_w$

Dividing the above two masses we get

$\frac{m_p}{m_w}=\frac{93}{62}\\\Rightarrow \frac{m_p}{m_w}=1.5\\\Rightarrow m_p=1.5m_w$

Hence, the mass of the person is 1.5 times the mass of the water in them

Now, Mass of person = 81 kg = $m_p$

$m_p=1.5m_w\\\Rightarrow m_w=\frac{1}{1.5} m_p\\\Rightarrow m_w=\frac{1}{1.5} \times 81\\\Rightarrow m_w=54\ kg$

So, the mass of water in a person that has mass of 81 kg is 54 kg

3 0

3 years ago

The energy diagram shows the changes in energy during a chemical reaction.

Reil [10]

Answer: A. The reactants have higher potential energy, and energy is released.

Explanation:

ap3x

6 0

2 years ago