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ivanzaharov [21]
3 years ago
10

Why do specific heat capacity of objects differ ?​

Physics
2 answers:
vladimir2022 [97]3 years ago
5 0

Explanation:

<em>Each substance will have a different mass, so when the amount of heat and the change in temperature are held constant, the only variable is the mass. Therefore, because mass is the only variable, so because substances have different masses, they will have different specific heats</em><em>.</em><em> </em>

kirill115 [55]3 years ago
4 0

Answer:

substances have different melting and boiling points to one another.

Explanation:

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A kite 100 ft above the ground moves horizontally at a speed of 11 ft/s. At what rate is the angle (in radians) between the stri
frutty [35]

Answer:

-2.26×10^-4 radians

Explanation:

The solution involves a right angle triangle

Length is z while the horizontal is the height x

X^2+ 100^2=z^2

Taking the derivatives

2x(dx/dt)=Z^2(dz/dt)

Specific moments = Z= 200 ,X= 100sqrt3 and dx/dt= 11

dz/dt= 1100sqrt3/200 = 9.53

Sin a= 100/a

Taking derivatives in terms of t

Cos a(da/dt)=100/z^2 dz/dt

a= 30°

Cos (30°)da/dt= (-100/40000×9.5)

a= -2.26×10^-4radians

8 0
4 years ago
Read 2 more answers
Police radars determine speed by measuring the Doppler shift of radio waves reflected by a moving vehicle. They do so by determi
soldi70 [24.7K]

Answer: 0.81 GHz

Explanation:As written in the question police radars works by determining the beat frequency between sent and reflected wave. This beat frequency is just difference of the frequencies of the sent and reflected wave.

To Calibrate the Radar the turning fork must produce the beat frequency similar to that produce by reflected wave at right speed which in this case is 55mph

Hence we know that turning fork frequency=Δf

Δf=f'-f

here f=10.5 Ghz

f=10.5 *10^9

f=10500000000

also

v_s=55mph

v_s=24.5872 m/s

since the source is moving a/c to doppler effect

f'=f\frac{v}{v-v_s}

taking speed of sound to be v=344m/s

f'=10500000000*\frac{344}{344-24.5872}

f'=11.3*10^9

Δf=8.08*10^8

Δf=0.81 GHz

4 0
3 years ago
State any two factors affecting pressure in liquids​
BabaBlast [244]

Answer:

Density of liquid (ρ)

Depth of liquid (h)

Acceleration due to gravity (g)

Explanation: Pressure within a liquid depends only on the density of the liquid, the acceleration due to gravity, and the depth within the liquid.

6 0
3 years ago
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A substance whose shape can easily change is a
OleMash [197]
There are many. But if this is a chemistry question it’s liquid
8 0
3 years ago
A bus drives at a speed of 75 m/s for 1200 seconds. How far does the bus go
kolezko [41]

Answer:

90,000 meters

Explanation:

75*1200 = 90,000

8 0
3 years ago
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