3 years ago

Help 30 points and willgive brainliest

Physics

1 answer:

MissTica3 years ago

8 0

HEJEGEJDHIEBDJDHDIDGDJGJDHD

You might be interested in

If a car can go from 0 to 60mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50m

Helga [31]

The answer would be <span>87.5 mi/hr</span>

4 0

3 years ago

An astronaut who is repairing the outside of her spaceship accidentally pushes away a 99.1 cm long steel rod, which flies off at

iren [92.7K]

Answer:

83.847519 mV

Explanation:

B = Magnetic field strength = 7.11 mT

L = Length of steel rod = 99.1 cm

v = Velocity of steel rod = 11.9 m/s

The induced electro motive force is given by

$E=BLV\\\Rightarrow E=7.11\times 10^{-3}\times 0.991\times 11.9\\\Rightarrow E=0.083847519\ V=83.847519\ mV$

The magnitude of the EMF induced between the ends of the rod is 83.847519 mV

4 0

3 years ago

A(n) 1400-kg car going at 6.32 m/s in the positive x direction collides with a 2900-kg truck at rest. The collision is totally i

tresset_1 [31]

Answer:

a) Acceleration of the car is given as

$a_{car} = -21 m/s^2$

b) Acceleration of the truck is given as

$a_{truck} = 10.15 m/s^2$

Explanation:

As we know that there is no external force in the direction of motion of truck and car

So here we can say that the momentum of the system before and after collision must be conserved

So here we will have

$m_1v_1 + m_2v_2 = (m_1 + m_2)v$

now we have

$1400 (6.32) + 2900(0) = (1400 + 2900) v$

$v = 2.06 m/s$

a) For acceleration of car we know that it is rate of change in velocity of car

so we have

$a_{car} = \frac{v_f - v_i}{t}$

$a_{car} = \frac{2.06 - 6.32}{0.203}$

$a_{car} = -21 m/s^2$

b) For acceleration of truck we will find the rate of change in velocity of the truck

so we have

$a_{truck} = \frac{v_f - v_i}{t}$

$a_{truck} = \frac{2.06 - 0}{0.203}$

$a_{truck} = 10.15 m/s^2$

5 0

3 years ago

When light from an object exits a lens and the image produced can be seen on a piece of paper, what kind of image is produced

vovikov84 [41]

Answer:virtual

Explanation:

7 0

3 years ago

What must happen to light in order for an image to form

ss7ja [257]

Small opening if you were directions from the light to come from

3 0

3 years ago