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creativ13 [48]
3 years ago
14

How much work does a mother do if she lifts each of her twin babies upward 1.0? Each baby weights 90N

Physics
1 answer:
jonny [76]3 years ago
8 0

  Work = (force) x (distance)

To lift each baby,            force = 90N,
                                   distance = 1.0 something, let's say  1.0 meter .

Work to lift each baby = (90N) x (1.0 meter) = 90 joules.

Work to lift both of them = 2 x 90 joules = 180 joules.

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What acceleration reaches a car of Formla 1 of 650 Kg of mass whose engine starts with a force of 6000 N
PtichkaEL [24]
Hope this helps

650 x 6000= 3900000
4 0
3 years ago
If we compare the force of gravity too strong nuclear force we would conclude that
Yuri [45]
The force of gravity is much weaker than the strong nuclear force. But the strong nuclear force only acts over short distances, such as within the nuclues. The gravitational force can act over infinite distance.

6 0
4 years ago
Read 2 more answers
It is 5.0 km from your home to the physics lab. As part of your physical fitness program, you could run that distance at 10 km/h
Ostrovityanka [42]

Answer:

Walking burns up more energy,1740000J

Explanation:

Given that the displacement is 5.0km, and running at 10km/h and uses, walking at 3km/hr and uses 290watts:

Energy consumption for running is calculated as:

700watts=700j/s,d=5000m,v=\frac{25}{9}m/s\\\\\therefore E_c=\frac{d}{v}\times Energy \ usage\\\\=\frac{5000}{\frac{25}{9}}\times 700j/s\\\\=1260000J

Energy consumption for walking is calculated as:

290watts=290j/s,d=5000m,v=\frac{5}{6}m/s\\\\\therefore E_c=\frac{d}{v}\times Energy \ usage\\\\=\frac{5000}{\frac{5}{6}}\times 290j/s\\\\=1740000J

Walking is a slower process hence the need for more energy over longer periods  raltive to running the same distance.

Hence walking burns more energy; 1,740,000J. It burns more because you walk for a greater period of time.

5 0
3 years ago
Name the type of circulation in a region where seasonal reversals in prevailing winds cause wet summers and relatively dry winte
Luden [163]

Answer:

A Monsoon Circulation

Explanation:

A Monsoon Circulation is the type of circulation in a region where seasonal reversals in prevailing winds cause wet summers and relatively dry winters.

4 0
4 years ago
Coherent light with wavelength = 600 nm falls on two very narrow closely spaced slits and the interference pattern is observed o
Mrac [35]

Answer:

The distance between the two slits is 1.2mm.    

Explanation:

The physicist Thomas Young establishes, through its double slit experiment, a relationship between the interference (constructive or destructive) of a wave, the separation between the slits, the distance between the two slits to the screen and the wavelength.

\Lambda x = L\frac{\lambda}{d}  (1)

Where \Lambda x is the distance between two adjacent maxima, L is the distance of the screen from the slits, \lambda is the wavelength and d is the separation between the slits.  

If light pass through two slits a diffraction pattern in a screen will be gotten, at which each bright region corresponds to a crest, a dark region to a trough, as consequence of constructive interference and destructive interference in different points of its propagation to the screen.  

Therefore, d can be isolated from equation 1.

d = L\frac{\lambda}{\Lambda x}  (2)

Notice that it is necessary to express L and \lambda in units of millimeters.

L = 4m \cdot \frac{1000mm}{1m} ⇒ 4000mm

\lambda = 600nm \cdot \frac{1mm}{1x10^{6}nm} ⇒ 0.0006mm

d = (4000mm)\frac{0.0006mm}{2mm}

d = 1.2mm

Hence, the distance between the two slits is 1.2mm.

6 0
3 years ago
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