1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Grace [21]
2 years ago
12

It is not possible to accurately calculate instantaneous velocity. TRUE FALSE

Physics
1 answer:
Papessa [141]2 years ago
4 0
False
we can calculate it at a specific time by taking the derivative of positive function, which gives us the functional form of instantaneous velocity v(t)
You might be interested in
Should i make my pet shark bark like a dog woof woof​
mr_godi [17]

Answer: YES !!

Explanation:  THAT WOULD BE AMAZING!!!

8 0
3 years ago
A small ball with mass 1.20 kg is mounted on one end of a rod 0.860 m long and of negligible mass. The system rotates in a horiz
Rufina [12.5K]

Answer:

0.88752 kgm²

0.02236 Nm

Explanation:

m = Mass of ball = 1.2 kg

L = Length of rod = 0.86 m

\theta = Angle = 90°

Rotational inertia is given by

I=mL^2\\\Rightarrow I=1.2\times 0.86^2\\\Rightarrow I=0.88752\ kgm^2

The rotational inertia is 0.88752 kgm²

Torque is given by

\tau=FLsin\theta\\\Rightarrow \tau=2.6\times 10^{-2}\times 0.86sin90\\\Rightarrow \tau=0.02236\ Nm

The torque is 0.02236 Nm

5 0
3 years ago
How do you calculate the volume and density of something that weighs 20 grams?
Nostrana [21]
Mass divided by volume is density, while mass times density is volume. you cannot calculate density without volume and you cannot calculate volume without density.
i believe that's the answer.
oh gosh i didn't realize my middle school education involved high school stuff.
6 0
3 years ago
A Hall probe, consisting of a rectangular slab of current-carrying material, is calibrated by placing it in a known magnetic fie
Citrus2011 [14]

Answer:

(a) 0.345 T

(b) 0.389 T

Solution:

As per the question:

Hall emf, V_{Hall} = 20\ mV = 0.02\ V

Magnetic Field, B = 0.10 T

Hall emf, V'_{Hall} = 69\ mV = 0.069\ V

Now,

Drift velocity, v_{d} = \frac{V_{Hall}}{B}

v_{d} = \frac{0.02}{0.10} = 0.2\ m/s

Now, the expression for the electric field is given by:

E_{Hall} = Bv_{d}sin\theta                            (1)

And

E_{Hall} = V_{Hall}d

Thus eqn (1) becomes

V_{Hall}d = dBv_{d}sin\theta

where

d = distance

B = \frac{V_{Hall}}{v_{d}sin\theta}                      (2)

(a) When \theta = 90^{\circ}

B = \frac{0.069}{0.2\times sin90} = 0.345\ T

(b) When \theta = 60^{\circ}

B = \frac{0.069}{0.2\times sin60} = 0.398\ T

5 0
2 years ago
A deep space probe travels in a straight line at a constant speed of over 16,000 m/s. Assuming there is no friction in space, if
diamong [38]

Answer:

I believe that the answer is d.

Explanation:

Because there is nothing to make the aircraft accelerate or decelerate, it is going to stay in constant motion with no acceleration.

3 0
3 years ago
Other questions:
  • An object with charge q=−6.00×10−9C is placed in a region of uniform electric field and is released from rest at point A. After
    5·1 answer
  • the mass of a brick is 4 kg, find the mass of water displaced by it when completely immersed in water.​
    6·1 answer
  • The gravitational force between the Sun (mass -1.99 1030 kg) and Mercury (mass 3.30 x 1023 kg) is 899 1021 N. How far is Mercury
    10·2 answers
  • 1. Explain what dumping is, giving some examples. Does dumping raise any moral issues? What are they? What would an ethical rela
    7·1 answer
  • When viewed in yellow light, an object that reflects all the colors of light will appear_____.
    15·1 answer
  • Imagine that the light you observe from space is exhibiting a redshift. This would mean that the Universe is Choose one: A. trav
    8·1 answer
  • Divide. Write the quotient in lowest terms.<br> 3\dfrac{3}{8} \div 9 =3 <br> 8<br> 3<br> ​ <br> ÷9
    5·2 answers
  • Which contributes most to our average dose of background radiation?
    6·1 answer
  • Can some one help me with this so i can bring my grade up
    11·1 answer
  • imagine you are outside enjoying the warm sunshine with friends. as you briefly glance up at the sun, the part of the sun that y
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!