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
Svetradugi [14.3K]
3 years ago
14

Suppose that Mercury rotates on its axis once every days. The equator lies on a circle with a radius of miles. (a) Find the angu

lar speed of a point on its equator in radians per year ( days). (b) Find the linear speed of a point on the equator in miles per year. Do not round any intermediate computations, and round your answer to the nearest whole number.
Physics
1 answer:
defon3 years ago
6 0

Answer:

a)  w= 6 rad/day b) v = 2 10² m

Explanation:

Let's use angular kinematic relationships

a) The angular velocity is

    W = θ / t

     t = 1 day (24 h / 1 day) (3600s / 1 h) = 86400 s

    w = 2π / 86400

    w = 7.27 10⁻⁵ rad / s

Reduce to rad / day

   w = 7.27 rad / s (3600s / 1 h) (24 h / 1 day)

   w = 6.28 rad / day

   w= 6 rad/day

b) the linear velocity is

   v = w r

Mercury radius is

   r = 2.43 106 m

   v =  7.27 10⁻⁵ 2.43 10⁶

   v = 1.76661 10² m / s

   v = 2 10² m

You might be interested in
Given that both liquid A and B exert the same amount of pressure .What would be the height of column of liquid A if the density
Black_prince [1.1K]

Answer:

ans 5

Explanation:

hope it's help It seems to me

8 0
3 years ago
A current of 2 A flows through a resistor. The voltage across the resistor is 18 V.
stepan [7]

Answer:

R=9\ \Omega

Explanation:

Given that,

Current, I = 2 A

Voltage across the resistor, V = 18 V

We need to find the value of resistance of the resistor. Let the resistance be R. We can find it using Ohm's law i.e.

V = IR

Where

R is the resistance of the resistor

R=\dfrac{V}{I}\\\\R=\dfrac{18}{2}\\\\R=9\ \Omega

So, the resistance of the resistor is equal to 9\ \Omega.

3 0
3 years ago
Why are objects that fall near earths surface rarely in free fall?
marissa [1.9K]

"Free fall" means that gravity is the ONLY force acting on the object.  If there's air resistance, then it isn't free-fall.  

Objects that fall near earths surface are ALWAYS falling through air, unless they're inside some kind of a vacuum chamber with all the air removed from it.

8 0
3 years ago
Sorin hits a cricket ball straight up into the air. After 1.5\,\text{s}1.5s1, point, 5, start text, s, end text, the ball is fal
Illusion [34]

Answer:

8.2 m/s upward

Explanation:

The motion of the ball is a free fall motion, so we can use the suvat equation:

v=u+at

where:

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time

Choosing upward as positive direction:

v=-6.5 m/s

a=g=-9.8 m/s^2 (acceleration of gravity)

t = 1.5 s

Solving for u, we find the initial velocity:

u=v-at=-6.5-(-9.8)(1.5)=8.2 m/s

And the direction is upward.

3 0
3 years ago
Consider the following setup with three identical springs, a ruler for length measurements and three known masses and three unkn
svetlana [45]

Answer:

To find the value of the unknown weight, we previously placed the 3 known weights and made a graph of the force against displacement

When hanging the weight is known, we measure the displacement and from the graph we can find the value of the hanging masses

We can also use the equation and multiply the constant K by the displacement and this is the applied weight.

Explanation:

For this problem we will use the translational equilibrium relation

        F –W = 0

        F = W

        W = mg

The spring elastic force is

        F = - k x

We substitute

        k x = m g

Where we see that the force of the spring is equal to the weight of the body.

To find the value of the unknown weight, we previously placed the 3 known weights and made a graph of the force against displacement

When hanging the weight is known, we measure the displacement and from the graph we can find the value of the hanging masses

We can also use the equation and multiply the constant K by the displacement and this is the applied weight.

4 0
4 years ago
Other questions:
  • The loop is in a magnetic field 0.20 T whose direction is perpendicular to the plane of the loop. At t = 0, the loop has area A
    9·1 answer
  • An object has traveled 20 meters in 40 seconds what is its average speed
    7·1 answer
  • Which condition must be met in order for an equation to be balanced?
    7·1 answer
  • How does the science of heat transfer differ from the science of thermodynamics?
    10·1 answer
  • When doing a squat, how do you do it without getting hurt?
    5·2 answers
  • HELP QUICK WILL MARK AS BRAINLEST!!!
    11·1 answer
  • An instrument used to detect the current in a<br> circuit is called
    9·2 answers
  • How to keep my family safe during a hurricane?
    9·1 answer
  • Net force of 8.0 N acts on an 18 kg body for one minute. Determine the impulse due to the force.
    11·1 answer
  • M=3000km v=25m/s what’s the momentum
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!