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Tomtit [17]
3 years ago
13

After the same car leaves the platform, gravity causes it to accelerate downward at a rate of 9.8 m/s2. What is the gravitationa

l force on the car?
Physics
1 answer:
Simora [160]3 years ago
7 0
The gravitational force on the car is

(9.8 m/s^2) x (the car's mass in kg).

The unit is newtons.
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At one instant, an electron (charge = –1.6 x 10–19 C) is moving in the xy plane, the components of its velocity being vx = 5.0 x
Tomtit [17]

Answer:

The direction of force is along negative Z axis and the magnitude of force is

6.4 x 10^-14 N.

Explanation:

q = - 1.6 x 10^-19 c

vx = 5 x 10^5 m/s, vy = 3 x 10^5 m/s, B = 0.8 T along Y axis

The velocity vector is given by

v = 5 x 10^5 i + 3 x 10^5 j

B = 0.8 j

Force on a charged particle place in a magnetic field is given by

F = q (v x B)

F = -1.6 x 10^-19 {(5 x 10^5 i + 3 x 10^5 j) x (0.8 j)}

F = - 1.6 x 10^-19 (5 x 0.8 x 10^5 k)

F = - 6.4 x 10^-14 k

The direction of force is along negative Z axis and the magnitude of force is

6.4 x 10^-14 N.

3 0
3 years ago
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Law Incorporation [45]

a. Combustion is the answer

7 0
3 years ago
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A small jet airplane has a total wing area of 77.5 m2 and a mass of 7.23 104 kg. (a) If this jet is in horizontal flight, determ
telo118 [61]

To solve this problem we must simply resort to Newton's second law as well as the relationship between pressure and force as a physical unit applied in a given area.

In mathematical terms the Weight can be expressed as

F_w = mg

Where,

m = mass

g = Gravitational Acceleration

We have the mass and the gravitational acceleration therefore the Weight is

m = 7.23*10^4Kg

g = 9.8m/s^2

Replacing we have

F_w = (7.23*10^4)(9.8)

F_w = 708540 N

In this way the pressure exerted according to the active Area is,

P = \frac{F}{A}

P = \frac{708540}{77.5}

P = 9142.45Pa

Therefore the pressure difference between the lower and upper surface of the wings is 9.14kPa

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3 years ago
NEED HELP ASAP Does this Intro simulation support the law of conservation of energy? Use evidence to explain why or why not.
TiliK225 [7]

is this the skater one? If so, it does support the law of conservation of energy because at the top of the ramp the skater has the same amount of potential energy their total energy and as the skater goes down the ramp their potential energy lowers as their kinetic energy rises.

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4 years ago
at Niagara Falls, if 505 kg of water fall a distance of 50.0 m, what is the increase in the internal energy of the water at the
anygoal [31]

Answer:

Hope that helps

Explanation:

the increase in the internal energy of the water at the bottom of the falls

= mgh

= 505 * 9.81 * 50

= 247703 J ----answer

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