All categories

3 years ago

Engineers design a system for heating the air in a house. They want the

Physics

1 answer:

tino4ka555 [31]3 years ago

4 0

The answer would be c

You might be interested in

Graphing data is most used to help you to observe_____ *

kotykmax [81]

Answer: Graphing data is used to display data because it is easier to see trends in the data when it is displayed visually compared to when it is displayed numerically in a table.

5 0

3 years ago

An astronaut landed on a far away planet that has a sea of water. To determine the gravitational acceleration on the planet's su

ra1l [238]

Answer:

Acceleration due to gravity will be $g=17.3m/sec^2$

Explanation:

We have given gauge pressure P = 3.8 atm = 3.8×101325 = 385035 Pa

Depth h = 24.3 m

Density $\rho =1000kg/m^3$

We have find the acceleration due to gravity at the surface of planet

We know that pressure is given by

$P=\rho gh$

So $385035=1000\times g\times 24.3$

$g=17.3m/sec^2$

Acceleration due to gravity will be $g=17.3m/sec^2$

4 0

4 years ago

A 1,383 kg purple car is driving southbound on a road and collides with a 1,827 kg orange car, that was traveling 31.87 m/s east

user100 [1]

Answer:

Explanation:

We shall apply work energy theorem to calculate the initial velocity just after the collision .

Their kinetic energy will be equal to work done by friction .

force of friction = μ mg , where μ is coefficient of friction , m is total mass and g is acceleration due to gravity

force = .463 x 3210 x 9.8

= 14565.05 N

work done = force x displacement

= 14565.05 x 14.54 = 211775.88 J

now applying work energy theorem

1/2 m v² = 211775.88 , m is composite mass , v is velocity just after the collision

.5 x 3210 x v² = 211775.88

v² = 131.94

v 11.48 m /s

3 0

3 years ago

On the decibel scale,an increase of 1 dB means that sound intensity is increased by a factor of ________?

Maurinko [17]

Your answer would be 10 decibels

4 0

3 years ago

Read 2 more answers

Find the radius of the path described by a proton moving at 15 km/s in a plane perpendicular to a 400-g magnetic field.

Jet001 [13]

Answer:

The radius described the proton moving is

r=3.91mm

Explanation:

The magnetic field that moving the proton with the velocity

v=15 km/s

To find the radius combinate the magnetic field with the mass of the proton and the charge of the proton

r = mv=eB

r = mv/eB

$r=\frac{(1.67*10^{-27})*(15\frac{km}{s})}{(1.6*10^{-19})(4*10^-2kg)}$

r = 3.9mm

6 0

3 years ago