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GenaCL600 [577]
3 years ago
15

What is the difference between time and velocity

Physics
1 answer:
Alexxx [7]3 years ago
7 0
There are loads of similarities, but there are differences and that's what you want! 

Speed- Is usually referring to how fast an object moves, it is calculated by space per unit. 

Velocity- Refers to the rate at which said object changes position in a certain direction. Usually calculated by the displacement of space per unit.

SO it sounds the same, but simple answer Velocity deals with direction, and speed does not!
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What are used by organisms for long-term energy storage
kifflom [539]

Answer:

Fatty acids.

Explanation:

-Long term energy storage is stored in the form of triglycerides .

-They are efficient storing molecules. They are more efficient thatn glycogen(cabohydrates).

-Fatty acids are more calori dense hence them being ideal for long term energy storage.

4 0
4 years ago
An object with an initial speed of 4.0 m/s accelerates uniformly at 2.0 m/s^2
Marta_Voda [28]
An object with an initial speed of 4.0 m/s accelerates uniformly at 2.0 m/s^2
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5 0
3 years ago
A rescue plane spots a person floating in a lifeboat​ 55 m directly below and releases an emergency kit with a parachute. The pa
muminat

55 = (1/2) 6.91 t^2

t = about 4

4 * 71 = 284

3 0
3 years ago
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A torque of 36.5 N · m is applied to an initially motionless wheel which rotates around a fixed axis. This torque is the result
vivado [14]

Answer:

21.6\ \text{kg m}^2

3.672\ \text{Nm}

54.66\ \text{revolutions}

Explanation:

\tau = Torque = 36.5 Nm

\omega_i = Initial angular velocity = 0

\omega_f = Final angular velocity = 10.3 rad/s

t = Time = 6.1 s

I = Moment of inertia

From the kinematic equations of linear motion we have

\omega_f=\omega_i+\alpha_1 t\\\Rightarrow \alpha_1=\dfrac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha_1=\dfrac{10.3-0}{6.1}\\\Rightarrow \alpha_1=1.69\ \text{rad/s}^2

Torque is given by

\tau=I\alpha_1\\\Rightarrow I=\dfrac{\tau}{\alpha_1}\\\Rightarrow I=\dfrac{36.5}{1.69}\\\Rightarrow I=21.6\ \text{kg m}^2

The wheel's moment of inertia is 21.6\ \text{kg m}^2

t = 60.6 s

\omega_i = 10.3 rad/s

\omega_f = 0

\alpha_2=\dfrac{0-10.3}{60.6}\\\Rightarrow \alpha_1=-0.17\ \text{rad/s}^2

Frictional torque is given by

\tau_f=I\alpha_2\\\Rightarrow \tau_f=21.6\times -0.17\\\Rightarrow \tau=-3.672\ \text{Nm}

The magnitude of the torque caused by friction is 3.672\ \text{Nm}

Speeding up

\theta_1=0\times t+\dfrac{1}{2}\times 1.69\times 6.1^2\\\Rightarrow \theta_1=31.44\ \text{rad}

Slowing down

\theta_2=10.3\times 60.6+\dfrac{1}{2}\times (-0.17)\times 60.6^2\\\Rightarrow \theta_2=312.03\ \text{rad}

Total number of revolutions

\theta=\theta_1+\theta_2\\\Rightarrow \theta=31.44+312.03=343.47\ \text{rad}

\dfrac{343.47}{2\pi}=54.66\ \text{revolutions}

The total number of revolutions the wheel goes through is 54.66\ \text{revolutions}.

3 0
3 years ago
The charge an electron has spinning around a nucleus.<br><br>(What is it?) <br><br>​
Evgen [1.6K]

Answer:

Negative charge

Explanation:

Electron is an negative charge that spins around the nucleus.

4 0
4 years ago
Read 2 more answers
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