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liberstina [14]
3 years ago
14

A device that does work with one movement and changes the size or direction of a force is a(n)

Physics
2 answers:
tresset_1 [31]3 years ago
7 0
A device that does work with one movement and changes the size or direction of a force is a simple machine.
inessss [21]3 years ago
7 0

Answer:

it is a simple machine

Explanation:

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The _____ of an object consists of its speed and direction.
ELEN [110]
Velocity would be an answer
3 0
3 years ago
3.0E-17 joules divided by 1.0E -27 kgm/s equals?
insens350 [35]

Here we have two physical quantities which we have to divide

P_1 = 3.0 \times 10^{-17} J

other is

P_2 = 1.0 \times 10^{-27} kg m/s

now we need to find its division

\frac{P_1}{P_2} = \frac{3.0\times 10^{-17}}{1.0\times 10^{-27}}

now we have

\frac{P_1}{P_2} = 3.0\times 10^{10} Js/kgm

7 0
3 years ago
Can someone explain the law of conservation of energy?
Bad White [126]
The law of conservation of energy is:

-- Energy can't be created or destroyed.

-- Energy can't just appear out of nowhere.  If you suddenly have
more energy, then the 'extra' energy had to come from somewhere.

-- Energy can't just disappear.  If you suddenly have less energy,
then the 'missing' energy had to go somewhere.
________________________________________

There are also conservation laws for mass and electric charge.
They say exactly the same thing.  Just write 'mass' or 'charge'
in the sentences up above, in place of the word 'energy'.
________________________________________

And now I can tell you that the conservation laws for energy and mass
are actually one single law ... the conservation of mass/energy.  That's
because we discovered about 100 years ago that mass can convert
into energy, and energy can convert into mass, and it's the total of BOTH
of them that gets conserved (can't be created or destroyed).

How much mass makes how much energy ?

The answer is        E = m c²  .

5 0
3 years ago
Which pair of objects would have the LEAST gravitational attraction to each other?
postnew [5]

Answer:

A

Explanation:

8 0
3 years ago
The membrane that surrounds a certain type of living cell has a surface area of 5.3 x 10-9 m2 and a thickness of 1.1 x 10-8 m. A
kotykmax [81]

Answer:

2.1\times 10^{-12} c

Explanation:

We are given that

Surface area of membrane=5.3\times 10^{-9} m^2

Thickness of membrane=1.1\times 10^{-8} m

Assume that membrane behave like a parallel plate capacitor.

Dielectric constant=5.9

Potential difference between surfaces=85.9 mV

We have to find the charge resides on the outer surface of membrane.

Capacitance between parallel plate capacitor is given by

C=\frac{k\epsilon_0 A}{d}

Substitute the values then we get

Capacitance between parallel plate capacitor=\frac{5.9\times 8.85\times 10^{-12}\times 5.3\times 10^{-9}}{1.1\times 10^{-8}}

C=0.25\times 10^{-12}F

V=85.9 mV=85.9\times 10^{-3}

Q=CV

Q=0.25\times 10^{-12}\times 85.9\times 10^{3}=2.1\times 10^{-12} c

Hence, the charge resides on the outer surface=2.1\times 10^{-12} c

5 0
3 years ago
Read 2 more answers
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