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3 years ago

What is an example of a invertebrate that doesn’t have an exoskeleton?

2 answers:

5 0

Invertebrate means those organism which doesnot have backbone in their body .Some of the examples are:

1.Spider

2.earthworm

3.Starfish

4.Sea urchins.

hope this will help u a lot....

wel3 years ago

5 0

Jellyfish,slugs,worms

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Feathers and a bowling ball are dropped in a vacuum, airless environment. Which one will hit the ground first?

Reil [10]

Answer: at the same time

Explanation: in a vacuum, there isnt air, right? so there isnt gravity pushing down on the heavier object, so they will both land at the same time.

good? :)

8 0

2 years ago

What defines "the time of full wave"

eimsori [14]

Answer:

A) Periodic time

Explanation:

Wavelength is the distance from a point on a wave to the same point on an adjacent wave

Wave speed is the speed the wave is travelling at

Wave frequency is how many waves pass a fixed point in a given time period

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2 years ago

Make the following conversion:

katrin2010 [14]

Answer:

Kelvin to Celsius: C = K - 273 (C = K - 273.15 if you want to

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1 year ago

The crate, which sets on a 10 degree incline, has a weight of 3433.5 N and is subjected to a towing force P acting at a 20 degre

sp2606 [1]

Answer:

P = 981 N

Explanation:

Given

Angle of the incline θ = 10°

Angle of the towing force φ =20°

Weight of the crate W = 3433.5 N

The coefficient of static friction µ = 0.5

Solution

Forces Acting along the ramp

$\mu N = Pcos(10^{o}+10^{o})+Wsin10^{0} \\\mu N = Pcos30^{o}+Wsin10^{0}$

Forces acting perpendicular to the ramp

$N + Psin30^{o}=Wcos10^{0}\\\\N=Wcos10^{0}-Psin30^{o}\\$

Substituting the value of N we get

$\mu[Wcos10^{0}-Psin30^{o}] =Pcos30^{o}+Wsin10^{0}\\\\\mu Wcos10^{0}- \mu Psin30^{o} =Pcos30^{o}+Wsin10^{0}\\\\\mu Wcos10^{0}- Wsin10^{0}=Pcos30^{o}+\mu Psin30^{o} \\\\P=W\frac{\mu cos10^{0}- sin10^{0}}{cos30^{o}+\mu sin30^{o}} \\\\P=3433.5\frac{0.5 \times cos10^{0}- sin10^{0}}{cos30^{o}+0.5 \times sin30^{o}}\\\\P=980.66\\\\ P = 981 N$

6 0

2 years ago

A car travels at a constant 1km per hour in the positive direction down a straight line highway. What is the displacement of the

svlad2 [7]

Explanation:

1 km/hr × (1000 m/km) × (1 hr / 3600 s) × 45 s = 12.5 m

5 0

3 years ago