3 years ago

Name three ways in which an object can accelerate

Physics

1 answer:

shutvik [7]3 years ago

8 0

-Slow down
-Speed up
-Turning
Hope this helps

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A double-slit experiment is set up using red light (λ = 706 nm). A first order bright fringe is seen at a given location on a sc

Elanso [62]

Answer:

λ = 470.66 nm

Explanation:

for bright fringe $y_m = \frac{m\lambda D}{d}$

D= distance between slit and screen

d= distance between the slits

for first order bright fringe m = 1,

$y_1 = \frac{1\lambda D}{d}$

$y_1 = {706*D}{d}$

for dark fringe,we have

$y_m = {(m + 1/2)\lambda D}{d}$

Now to get the dark fringes at the same location we should have;

(706)D/d = (m + 1/2)λD/d

put m = 1

(1 + 1/2)λ = (706)

λ = 470.66 nm

6 0

4 years ago

How much negative charge has been removed from a positively charged electroscope if it has a charge of 7.5×10^-11

vova2212 [387]

I think 4.69 x 108 charges have been removed

5 0

3 years ago

4. A truck has four times the mass of a car and is moving with twice the speed of the car.

slamgirl [31]

Answer:

Relation between kinetic energy of truck and kinetic energy of car is given as

$K_t = 16 K_c$

Explanation:

As we know that mass of truck is four times the mass of car

$m_t = 4 m_c$

and the speed of truck is double that of speed of car

$v_t = 2v_c$

now we have kinetic energy of the truck is given as

$K_t = \frac{1}{2}m_t v_t^2$

similarly kinetic energy of car is given as

$K_c = \frac{1}{2}m_cv_c^2$

now from above two equations we have

$\frac{K_t}{K_c} = \frac{\frac{1}{2}m_tv_t^2}{\frac{1}{2}m_cv_c^2}$

$\frac{K_t}{K_c} = 4(4) = 16$

so we have

$K_t = 16 K_c$

3 0

4 years ago

a ball is dropped from a height of 120 meters. If it takes 2.00 seconds for a ball to fall 60 meters, how long will it take the

Phantasy [73]

It will take the ball 4 seconds to reach the ground because (120/2= 60/2=0= 2+2=4)

5 0

3 years ago

A coil of wire is comprised of 5 turns, has a current of 2 mA running through it, and a net magnetic field at its center of B is

VARVARA [1.3K]

Answer:

20cm

Explanation:

A coil wire comprises of 5 turns, it has a current of 2mA 

A net magnetic field at the center of B is equal to Mu over 40 end fractions times T

The radius of a coil of wire with N turns is r = 0.28 m. A clockwise current of Icoil = 1.0 A flows in the coil,

Therefore 40/2mA = 20

6 0

3 years ago