2 years ago

Which statement describes an energy measurement?

Physics

1 answer:

lutik1710 [3]2 years ago

6 0

The Answer is D.....

You might be interested in

A water wave has a wavelength of 204 m and a frequency of 0.5 Hz. How far does it travel in 1 s?

Zigmanuir [339]

Answer:

c = 204 x 5 = 1020 m/s so it travels 1020 meters in 1 second.

Explanation:

7 0

2 years ago

Which best describes how heat energy moves within a system?

Rzqust [24]

<span>Heat energy is transferred from warmer objects to cooler objects.

</span>

8 0

2 years ago

Read 2 more answers

A constant force of 2.5 N to the right acts on a 4.5 kg mass for 0.90 s.

Alborosie

Answer:

(a) $v_f=0.5\frac{m}{s}$

(b) $v_f=-11\frac{m}{s}$

Explanation:

(a) Since a constant external force is applied to the body, it is under an uniformly accelerated motion. Using the following kinematic equation, we calculate the final velocity of the mass if it is initially at rest( $v_0=0$ ):

$v_f=v_0+at\\v_f=at(1)$

According to Newton's second law:

$F=ma\\a=\frac{F}{m}(2)$

Replacing (2) in (1):

$v_f=\frac{F}{m}t\\v_f=\frac{2.5N}{4.5kg}(0.9s)\\v_f=0.5\frac{m}{s}$

(b) In this case we have $v_0=-11.5\frac{m}{s}$ . So, we use the final velocity equation:

$v_f=v_0+at\\v_f=v_0+\frac{F}{m}t\\v_f=-11.5\frac{m}{s}+\frac{2.5N}{4.5kg}(0.9s)\\v_f=-11\frac{m}{s}$

8 0

2 years ago

Scientists believe the universe follows a set of “rules” known as?

g100num [7]

I believe the answer is Natural Laws

3 0

2 years ago

A 9.0 volt battery is connected to four resistors in a parallel circuit. The resistors have 7.0 Ω, 5.0 Ω, 4.0 Ω, and 2.0 Ω respe

lidiya [134]

Series,effective resistance =R₁+R₂+R₃...
parallel,effective resistance 1/R=1/R₁ +1/R₂ +1/R₃...

Here,effective resistance 1/R =1/7 +1/5+ 1/4+1/2
=1.092
R = 1/1.092 =0.915Ω
voltage V=9 V
current I=V/R
I=9 / 0.915
=9.83 A

5 0

2 years ago

Read 2 more answers