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3 years ago

Use the diagram to answer the question.

Physics

2 answers:

Angelina_Jolie [31]3 years ago

7 0

Answer: Cricket chirping increases with an increase in temperature.

Explanation:

The independent variable in the experiment is the variable which can be altered, manipulated and changed so as to determine it's influence over the dependent variable, which is the outcome of the experiment.

Here in the given experiment, the number of chirps is the dependent variable which is increasing due to the increase in the temperature which is the independent variable.

rosijanka [135]3 years ago

6 0

Cricket chirping increases with an increase temperature.

the higher the temperature the higher the chirping

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One airplane is approaching an airport from the north at 181 kn/hr. A second airplane approaches from the east at 278 km/hr. Fin

umka2103 [35]

Answer:

The value is $\frac{dR}{dt} = -286.2 \ km/hr$

Explanation:

From the question we are told that

The speed of the airplane from the north is $\frac{dN}{dt} = -181 \ km /hr$

The negative sign is because the direction is towards the south

The speed of the airplane from the east is $\frac{dE}{dt} = -278 \ km/hr$

The negative sign is because the direction is towards the west

The distance of the southbound plane from the airport is $N = 30 \ km$

The distance of the westbound plane is $E = 15 \ km$

Generally the distance between the plane is mathematically represented using Pythagoras theorem as

$R^2 = N^2 + E^2$

Next differentiate implicitly this equation to obtain the rate at which the distance between the planes changes

$2R\frac{dR}{dt} = 2N \frac{dN}{dt} + 2E\frac{dE}{dt}$

Here

$R = \sqrt{N^2 + E^2}$

=> $R = \sqrt{30^2 + 15^2}$

=> $R =33.54 \ m$

$2(33.54) * \frac{dR}{dt} = 2( 30)*(-181) + 2*15*(-278)$

=> $67.08 * \frac{dR}{dt} = -19200$

=> $\frac{dR}{dt} = -286.2 \ km/hr$

4 0

4 years ago

True or False: When looking at kinetic vs. thermodynamic products the kinetic product predominates at low temperature.

zheka24 [161]

Answer:

true answer this question

3 0

3 years ago

An aquarium has a volume of 2.75 cubic

Harlamova29_29 [7]

The aquarium can hold 2750 liters because 1 cubic meter equals 1000 liters.

3 0

3 years ago

Bacteria vary somewhat in size, but a diameter of 2.9 μm is not unusual.

Sedbober [7]

Answer:

a) 6.4 x 10^-12 cm^3

b) 17 x 10^-6 mm^2

Explanation

a). The shape is assumed to be spherical The volume = volume of a sphere = \frac{4}{3} \pi r^3

πr

V = \frac{4}{3}*3.142* 1.15^3

∗3.142∗1.15

= 6.3715 μm^3

1 μm^3 = 10^-12 cm^3

6.3715 μm^3 = 6.3715 x 10^-12 cm^3

==> 6.4 x 10^-12 cm^3

8 0

2 years ago

Read 2 more answers

Calculate the mass of -1.5C of electrons

algol13

The electron is a type of low-mass, very negatively charged with a particle. As such, it can easily be deflected by passing close to other electrons or the positive nucleus of an atom. m = mass of an electron in kg = 9.10938356 × 10-31 kilograms. e = magnitude of the charge of an electron in coulombs = 1.602 x 10-19 coulombs. Hope this helps!

8 0

3 years ago