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3 years ago

What are the adaptions of the tundra

Physics

1 answer:

Mekhanik [1.2K]3 years ago

7 0

Answer: Migration and hibernation

Explanation: look it up ;)

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A 23.9 g sample of iridium is heated to 89.7 oC, and then dropped into 20.0 g of water in a coffee-cup calorimeter. The temperat

Nikolay [14]

Answer:

The specific heat capacity of iridium = 0.130 J/g°C

Explanation:

Assuming no heat losses to the environment and to the calorimeter,

Heat lost by the iridium sample = Heat gained by water

Heat lost by the iridium sample = mC ΔT

m = mass of iridium = 23.9 g

C = specific heat capacity of the iridium = ?

ΔT = change in temperature of the iridium = 89.7 - 22.6 = 67.1°C

Heat lost by the iridium sample = (23.9)(C)(67.1) = (1603.69 C) J

Heat gained by water = mC ΔT

m = mass of water = 20.0 g

C = 4.18 J/g°C

ΔT = 22.6 - 20.1 = 2.5°C

Heat gained by water = 20 × 4.18 × 2.5 = 209 J

Heat lost by the iridium sample = Heat gained by water

1603.69C = 209

C = (209/1603.69) = 0.130 J/g°C

7 0

3 years ago

Read 2 more answers

Hicham El Guerrouj of Morocco holds the world record in the 1500 m running race. He ran the final 400 m in a time of 51.9 s.

konstantin123 [22]

Answer: His average speed in mph over the last 400 m is 7.7 m/s.

Explanation:

Given: Hicham El Guerrouj of Morocco holds the world record in the 1500 m running race. He ran the final 400 m in a time of 51.9 s.

We know that , speed = $\dfrac{distance}{time}$

Here , distance = 400m and time = 51.9 s

Then, speed = $\dfrac{400}{51.9}\approx7.7\ m/s$

Hence, his average speed in mph over the last 400 m is 7.7 m/s.

5 0

3 years ago

What are the two key elements needed for fossilization

xenn [34]

Body Fossils and Trace Fossils.

Hope I helped and good luck with school. Bye!

3 0

3 years ago

Find the work w1 done on the block by the force of magnitude f1 = 60.0 n as the block moves from xi = -3.00 cm to xf = 1.00 cm

Norma-Jean [14]

By definition, the work done by a force is given by:
$W1 = F1 * d
$
Where,
F: magnitude of force
d: distance traveled.
Substituting values we have:
$W1 = F1 * (xf - xi)

W1 = 60 * (0.01 - (-0.03))
$
$W1 = 60 * (0.01 + 0.03)

W1 = 60 * (0.04)

W1 = 2.40 J
$
Answer:
the work w1 done on the block by the force of magnitude f1 = 60.0 n is:
W1 = 2.40 J

6 0

3 years ago

What should students do before inserting the plug of an electrical device into a socket?

Neporo4naja [7]

Explanation:

They should make sure the area is dry

4 0

3 years ago