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
babymother [125]
4 years ago
8

A girl sitting on a merry-go-round moves counterclockwise through an arc length of 3.15 m.

Physics
1 answer:
Delicious77 [7]4 years ago
4 0
Well, you get the movement as the arc in radians times the radius, which we need to find. Doing \frac{3.15}{1.82}=1.73, which is about \sqrt{3} meters.
You might be interested in
What features were the last to form on the moon?
kap26 [50]
<span>Rayed craters-</span><span> were the last features to form on the moon.</span>
3 0
3 years ago
Read 2 more answers
The current in a hair dryer measures 11 amps. The resistance of the hair dryer is 12 ohms. What is the voltage?
Valentin [98]

Voltage is given by the formula

V = IR (Ohms law)

where V is the Voltage

I is the current

and R is the Resistance

Here it is given that the current is I=11

Resistance is R =12

so plugging this in the formula

V = IR

V= 11 * 12

V= 132 Volts

So the Voltage for the given dryer is 132 Volts

8 0
4 years ago
A 21.3 A current flows in a long, straight wire. Find the strength of the resulting magnetic field at a distance of 45.7 cm from
Bezzdna [24]

Answer:

The magnetic field strength due to current flowing in the wire is9.322 x 10⁻⁶ T.

Explanation:

Given;

electric current, I = 21.3 A

distance of the magnetic field from the wire, R = 45.7 cm = 0.457 m

The strength of the resulting magnetic field at the given distance is calculated as;

B = \frac{\mu_o I}{2\pi R}

Where;

μ₀ is permeability of free space = 4π x 10⁻⁷ T.m/A

B = \frac{\mu_o I}{2\pi R}\\\\B = \frac{4\pi*10^{-7} *21.3}{2\pi(0.457)}\\\\B = 9.322 *10^{-6} \ T

Therefore, the magnetic field strength due to current flowing in the wire is 9.322 x 10⁻⁶ T.

7 0
3 years ago
1. What is the momentum of a 0.15 kg arrow that is traveling at 120 m/s?
Korvikt [17]

For this case we have that by definition, the momentum equation is given by:

p = m * v

Where:

m: It is the mass

v: It is the velocity

According to the data we have:

m = 0.15 \ kg\\v = 120 \frac {m} {s}

Substituting:

p = 0.15 * 120\\p = 18 \frac {kg * m} {s}

On the other hand, if we clear the variable "mass" we have:

m = \frac {p} {v}

According to the data we have:

p = 250 \frac {kg * m} {s}\\v = 5 \frac {m} {s}\\m = \frac {250} {5}\\m = 50 \ kg

Thus, the mass is 50 \ kg

Answer:

p = 18 \frac {kg * m} {s}\\m = 50 \ kg

3 0
3 years ago
What happens when a vector is multiplied by a scalar?
iogann1982 [59]

The scalar operates only on the magnitude of the vector. 
So the length of the vector may change ... becoming longer
or shorter ... but its direction doesn't change.


3 0
3 years ago
Other questions:
  • The driver of a car traveling at a speed of 20.0 m/s slams on the brakes and comes to a stop in 5.8 s. If we assume that the car
    6·1 answer
  • The water table is the
    13·1 answer
  • What percent of the suns energy reaches the earth?
    6·2 answers
  • Two concentric circular loops of radii b and 2b, made of the same type of wire, lie in the plane of the page, as shown below. Th
    9·1 answer
  • A 120-meter-long ski ift carries skiers from a station at the foot of a slope to a second station 40 m above. what is the IMA (i
    10·1 answer
  • Why is it important to listen to your body when playing sports
    12·2 answers
  • It takes 4.186 J of energy to raise the temperature of lg of water by 1°C. How fast would a 2 g
    13·1 answer
  • A person drops a 2.00 kg ball off a building. what is the force of weight on the ball?
    8·1 answer
  • what is the speed of a boy moving around a circular park of radius 6m if he goes around the park in 20s
    8·2 answers
  • 5. Find the net force acting on the books below
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!