All categories

3 years ago

16 + 6 - 6x - 4= -7x + 3 + 7

Physics

1 answer:

Viefleur [7K]3 years ago

4 0

Answer:

Explanation:

18-6x= -7x+3+7

18-6x=-7x +10

18-6x + 7x=10

-6x+7x=10-18

x=10-18

You might be interested in

You are in a car driving 60 mph without a seat belt. The driver needs to slam on their breaks very hard. At

m_a_m_a [10]

The correct answer is Newtons 2nd law

8 0

3 years ago

As outlaws escape in their getaway ear, which goes 3/4 c, the police officer fires a bullet from a pursuit ear, which only goes

Mariulka [41]

Answer:

a) Bullet will hit

b) Bullets will not hit

Explanation:

Given:

The velocity of the bullet, u = $\frac{1}{3}c$ in the rest frame of the bullet pursuit car

The velocity of the original frame of reference, v = $-\frac{1}{2}c$ with respect to the pursuit car.

Now, according to the Galileo

the velocity of the bullet in the original frame of reference (u') will be

u' = u - v

on substituting the values we get

u' = $\frac{1}{3}c-(-\frac{1}{2}c)$

u' = $\frac{1}{3}c+\frac{1}{2}c$

u' = $\frac{5}{6}c$

since this velocity ( $\frac{5}{6}c$ ) is greater than the ( $\frac{3}{4}c$ )

hence,

<u>the bullet will hit</u>

Now, according to the Einstein theory

the velocity of the bullet in the original frame of reference (u') will be

$u'=\frac{u-v}{1-\frac{uv}{c^2}}$

on substituting the values we get

$u'=\frac{\frac{1}{3}c-\frac{1}{2}c}{1-\frac{\frac{1}{3}c\times \frac{1}{2}c}{c^2}}$

$u'=\frac{\frac{5}{6}c}{1-\frac{1}{6}}$

$u'=\frac{5}{7}c$

since,

$u'=\frac{5}{7}c$ is less than ( $\frac{3}{4}c$ ), this means that the bullet will not hit

7 0

4 years ago

tatiyna

The answer is A. A folkway is a closely held belief by a specific group of people.

6 0

3 years ago

Read 2 more answers

3. Two spherical objects at the same altitude move with identical velocities and experience the same drag force at a time t. If

Daniel [21]

Answer:

Object 2 has the larger drag coefficient

Explanation:

The drag force, D, is given by the equation:

$D = 0.5 c \rho A v^2$

Object 1 has twice the diameter of object 2.

If $d_2 = d$

$d_1 = 2d$

Area of object 2, $A_2 = \frac{\pi d^2 }{4}$

Area of object 1:

$A_1 = \frac{\pi (2d)^2 }{4}\\A_1 = \pi d^2$

Since all other parameters are still the same except the drag coefficient:

For object 1:

$D = 0.5 c_1 \rho A_1 v^2\\D = 0.5 c_1 \rho (\pi d^2) v^2$

For object 2:

$D = 0.5 c_2 \rho A_2 v^2\\D = 0.5 c_2 \rho (\pi d^2/4) v^2$

Since the drag force for the two objects are the same:

$0.5 c_1 \rho (\pi d^2) v^2 = 0.5 c_2 \rho (\pi d^2/4) v^2\\4c_1 = c_2$

Obviously from the equation above, c₂ is larger than c₁, this means that object 2 has the larger drag coefficient

8 0

3 years ago

Satuarated solution changes into unsatuarated by heating give reason

Crazy boy [7]

Answer:

Due to application of heat on a saturated solution, the interparticle space increases due to increase in the kinetic energy of the particles which allows more solutes to dissolve in the solution thereby making it unsaturated.

4 0

3 years ago

16 + 6 - 6x - 4= -7x + 3 + 7​

16 + 6 - 6x - 4= -7x + 3 + 7