Another term for electromotive force is _____. voltage current resistance power

A bullet of .05 kg is fired into a block of wood. Knowing that the bullet left the gun with a muzzle velocity of 350. m/s, and t

Lunna [17]

We know, Impulse of a body is change in momentum.

Also, the final velocity of wood block is 0 m/s.

So, Impulse = Final Momentum - Initial Momentum

Impulse = 0 - ( 0.05 kg × 350 m/s )

Impulse = - 17.5 kg m/s

Therefore, the impulse exerted by the wood on the bullet is -17.5 kg m/s .

6 0

3 years ago

As the earth rotates, what is the speed of a physics student in Miami, Florida, at latitude 26∘? Ignore the revolution of the ea

ASHA 777 [7]

Answer:

$v =418 m/s$

Explanation:

given,

Radius of earth = 6400 Km

speed of a physics student in Miami, Florida, at latitude 26° = v

time period of rotation = 24 hour = 24 × 3600

= 86400 s

distance = speed × time

$v = \dfrac{distance}{time}$

$v = \dfrac{6400\times cos (26^0)\times 2 \pi }{86400}$

$v =0.41831 Km/s$

$v =418 m/s$

hence, the velocity of the student is equal to $v =418 m/s$

6 0

3 years ago

A boy projects a ball vertically upwards with velocity v from

boyakko [2]

Answer:

yes? what is the quseten

Explanation:

v is the max speed it can go if you droped a egg and a watermelon off a roof 20ft high thay would hit the ground at the same time becuse gravaty will effect them qualy. if you drop them from a jet liner 20,000 ft up thay will hit max.v. wich depends on mass so thay will hit at differnt times.

4 0

3 years ago

(a) Suppose a meter stick made of steel and one made of invar are the same length at 0°C. What is their difference in length at

dem82 [27]

Explanation:

Given that,

Initial temperature $T_{i}=0^{\circ}C$