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Misha Larkins [42]
4 years ago
14

When 1 kg of water and 1 kg of wood absorb the same amount of heat, the change in temperature of the wood is greater than the ch

ange in temperature of the water. which property helps to explain this difference?
A. Intermolecular forces in water are greater than those in wood.
B. Intermolecular forces in water are less than those in wood.
C. The latent heat of fusion of water is less than that of wood.
D. The latent heat of fusion of water is greater than that of wood.
Physics
1 answer:
vampirchik [111]4 years ago
8 0

Your Answer Will Be C

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1. An object 20 cm away from a lens produces a focused image on a film 15 cm away, what is the focal length
morpeh [17]

8.6 cm

Explanation:

Step 1:

In this we have to find the focal length of converging lens.

To find focal length we have,

(1/u) + (1/v) = (1/f)

where u = Object distance

           v= Image distance

           f = Focal length

Step 2:

(1/f) = (1/20) + (1/15)

(1/f) =  0.116

f = 1/0.116

f = 8.6 cm

6 0
3 years ago
A 1-kg discus is thrown with a vertical velocity of 19 m/s at an angle of 35 degrees from a height of 1.94 m. Do not factor in a
Travka [436]

Answer:

Vertical velocity   V_y = 10.89 \ m/s

Horizontal velocity  V_x = 15.57 \ m/s

Explanation:

If a 1 -kg is thrown vertically with a velocity of 19  m/s at an angle of 35 °C from a height 1.94 m

The vertical and horizontal component can be resolved as:

V_y = Vsin \theta \\ \\ \\\\V_x = Vcos \theta

For Vertical component :

V_y = V sin \theta \\\\V_y  = 19 * sin 35 \\ \\   V_y = 19* 0..5736 \\ \\ V_y = 10.89 \ m/s

For horizontal velocity

V_x = V cos \theta \\\\V_x  = 19 * cos 35 \\ \\   V_x = 19* 0.8192 \\ \\ V_x = 15.57 \ m/s

4 0
3 years ago
What will be the total resistance and current in a parallel circuit with a 15-volt battery and three 10-ohm resistors?
dsp73

Hello!

Recall for resistors in parallel:
\frac{1}{R_t} = \frac{1}{R_1} + \frac{1}{R_2} + ... + \frac{1}{R_n}

We can begin by calculating the total resistance:
\frac{1}{R_t} = \frac{1}{10} +  \frac{1}{10} + \frac{1}{10}}\\\\\frac{1}{R_t} = \frac{3}{10}\\\\R_t = \frac{10}{3} = \boxed{3.333 \Omega}

Now, we can calculate the current using Ohm's Law:
V = iR\\\\i = \frac{V}{R}

V = Voltage of battery (V)
i = Current (A)

R = Resistance (Ω)

Plug in the given voltage and the total resistance we solved for.

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8 0
2 years ago
TRUE OR FALSE: Waves can travel through mass
murzikaleks [220]
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a_sh-v [17]

Explanation:

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