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vekshin1
3 years ago
8

Bats use ultrasound in echolocation. This sound is characterized by _____.

Physics
1 answer:
jeyben [28]3 years ago
4 0
High frequency.........
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What is the acceleration of a 100-kg mass that has a force of 50 n acting on it?
Andrei [34K]
F=ma
50=100a
a=50/100
a=0.5 m/s^2
6 0
3 years ago
What does a convergent boundary between oceanic and continental plate form?
Romashka [77]

Answer:

a convergent plate boundary

Explanation:

when one plate is oceanic, there are large volcanoes. These volcanoes are found in lines that outline the subduction zone. Earthquakes also happen in these zones. The Aleutian Islands that border southern Alaska are an island arc

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4 years ago
Calculate the mean free path of air molecules at a pressure of 7.00×10^−13 atm and a temperature of 303 K . (This pressure is re
Grace [21]

Answer:

82.8986 km

Explanation:

Given:

Pressure = 7.00×10⁻¹³ atm

Since , 1 atm = 101325 Pa

So, Pressure = 7.00×10⁻¹³×101325 Pa = 7.09275×10⁻⁸ Pa

Radius = 2.00×10⁻¹⁰ m

Diameter = 4.00×10⁻¹⁰ m (2× Radius)

Temperature = 303 K

The expression for mean free path is:

\lambda (Mean\ free\ path)=\frac {K (Boltzmann\ Constant)\times Temperature}{\sqrt {2}\times \pi\times (Diameter)^2\times Pressure}

Boltzmann Constant = 1.38×10⁻²³ J/K

So,

\lambda (Mean\ free\ path)=\frac {1.38\times 10^{-23}\times 303}{\sqrt {2}\times \frac {22}{7}\times (4.00\times 10^{-10})^2\times 7.09275\times 10^{-8}}

<u>Mean free path = 82.8986×10³ m = 82.8986 km</u>

4 0
4 years ago
Place the balloon in a bell jar. If available also add some shaving cream and fresh marshmallows. Ask the instructor for help if
irina [24]

Answer:

The balloon will collapse

Explanation:

When air is removed from the bell jar, the balloon will collapse if the internal pressure from the balloon does not balance the atmospheric pressure from the surroundings.

5 0
3 years ago
If the forces acting on an _____ are in the same _______, they _____ together to form the net force
Ivenika [448]

Answer:If the forces acting on an object are in the same direction, they add together to form the net force.

Explanation:

3 0
4 years ago
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