All categories

4 years ago

Choose all that apply.

2 answers:

8 0

Can be absorbed and transformed into heat. i know this because i used to work as a constructor for lights and i had to go over a training on this subject.

algol [13]4 years ago

7 0

Answer:

can be absorbed and transformed into heat.

You might be interested in

You can see your image in front of mirror but not in the wall .why?

vivado [14]

Answer:

Because Bricks don't reflect. but mirrors reflect due to their lustre nature.

Explanation:

3 0

3 years ago

Definition: A command economy is where a central government makes all economic decisions. The government or a collective owns th

denis-greek [22]

A command economy<span> is a system where the government, rather than the free market, determines what goods should be produced, how much should be produced and the price at which the goods are offered for sale.</span>

7 0

3 years ago

A high-speed railway car goes around a flat, horizontal circle of radius 480 m at a constant speed. The magnitudes of the horizo

kvv77 [185]

Answer:

Net force ( F ) = 208 N.

Speed of car ( v ) = 68.58 m/s.

Explanation:-

The radius ( r ) = 480 m.

Mass of passenger ( m ) = 65 kg.

Horizontal force ( $f_{x}$ ) = 208 N.

Vertical force ( $f_{n}$ ) = 637 N.

Net vertical component of force ( $f_{x}$ ) = m*g - 637 = 65 * 9.8 - 637 = 0 N.

a ) magnitude of net force .

$F = \sqrt{f^{2} _{x} + f^{2} _{y} } = \sqrt{208^{2} + 0^{2} }$ = 208 N.

b) The speed of car.

$f_{n} = \frac{m*v^{2} }{r}$ where v is the velocity.

$637 = \frac{65 *v^{2} }{480}$

v² = 4704

v = 68.58 m/s.

6 0

3 years ago

a tennis ball is hit upward with a tennis racket an initial velocity of 12 m/s. What will the ball's speed be when it returns to

zaharov [31]

Answer: 12 m/s

Explanation:

If we ignore air resistance, gravity alone will reduce the upward velocity to zero at the top of the flight. As gravity is a conservative force, it will return exactly the same amount of energy to the tennis ball when it returns to the original elevation.

7 0

3 years ago

A 40.0-μFcapacitor is connected across a 60.0 Hz generator. An inductor is then connected in parallel with the capacitor. What i

amm1812

Answer:

The value of the inductance is 175.9 mH.

Explanation:

Given that,

Capacitor $C= 40.0\ \muF$