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
Anna11 [10]
3 years ago
5

A speed skater goes around a turn with a 31 m radius. The skater has a speed of 14 m/s and experiences a centripetal force of 46

0 N. What is the mass of the skater?
Physics
1 answer:
dybincka [34]3 years ago
4 0

Answer:

Mass of the skater, m = 72.75 kg

Explanation:

It is given that,

Radius of the circular path, r = 31 m

Speed of the skater, v = 14 m/s

Centripetal force, F = 460 N

We need to find the mass of the skater. It can be determined using the formula of centripetal force. It is given by :

F=\dfrac{mv^2}{r}

m=\dfrac{Fr}{v^2}

m=\dfrac{460\ N\times 31\ m}{(14\ m/s)^2}

m = 72.75 kg

So, the mass of the skater is 72.75 kg. Hence, this is the required solution.

You might be interested in
Below is a circuit schematic of sources and resistors (Figure 3). VS = 10V , R1 = 100Ω, R2 = 50Ω, R3 = 25Ω, IS = 2A. Calculate t
lorasvet [3.4K]

Answer:

V_3\approx 4.28\,\,V

I_1=0.0572\,\,amps

I_3\approx 0.171\,\,amps

Explanation:

Notice that this is a circuit with resistors R1 and R2 in parallel, connected to resistor R3 in series. It is what is called a parallel-series combination.

So we first find the equivalent resistance for the two resistors in parallel:

\frac{1}{Re}= \frac{1}{R1}+\frac{1}{R2}\\\frac{1}{Re}= \frac{1}{100}+\frac{1}{50}\\\frac{1}{Re}= \frac{3}{100}\\Re=\frac{100}{3} \,\,\Omega

By knowing this, we can estimate the total current through the circuit,:

Vs=I\,*\,(\frac{100}{3} +25)\\10=I\,*\,\frac{175}{3} \\I=\frac{30}{175} \,amps

So approximately 0.17  amps

and therefore, we can estimate the voltage drop (V3) in R3 uisng Ohm's law:

V_3=\frac{30}{175} *\,25=\frac{30}{7} \approx 4.28\,\,V

So now we know that the potential drop across the parellel resistors must be:

10 V -  4.28 V = 5.72 V

and with this info, we can calculate the current through R1 using Ohm's Law:

I_1=\frac{V_1}{R_1} =\frac{5.72}{100} =0.0572\,\,amps

4 0
4 years ago
QUESTION 1
mario62 [17]
It's D. If it absorbed it would be turning to steam. I am taking honors chem in high school we are learning this.
7 0
3 years ago
Read 2 more answers
In which activities is speed helpful? Running track Swimming Riding in a bike race All of the above
Burka [1]

Answer:

all of the above

Explanation:

they all require speed to beat

6 0
3 years ago
Read 2 more answers
A box is lowered using a rope. If the acceleration of the box, is 3.3 m/s2 (downward) and its mass is 29.1 kg, what is the magni
Stells [14]

Answer:

T=189.15 N

Explanation:

As we know that for downward motion

F acting = F (weight) - Tension T

m a = mg - T

⇒ T = m (g - a)

T = 29.1 kg ( 9.8 m/s² - 3.3 m/s²)

T=189.15 N

8 0
3 years ago
Which term best describes a severe weather event characterized by heavy snowfall, strong winds, and reduced visibility?
Margaret [11]

Answer:

OC. blizzard

Explanation:

In the United States, the National Weather Service defines a blizzard as a severe snow storm characterized by strong winds causing blowing snow that results in low visibilities. ... A severe blizzard has winds over 72 km/h (45 mph), near zero visibility, and temperatures of −12 °C (10 °F) or lower.

4 0
3 years ago
Other questions:
  • Which statement correctly lists the four forces from the weakest to the strongest?
    6·2 answers
  • Two point charges exert a 5.50 N force on each other. What will the force become if the distance between them is increased by a
    14·1 answer
  • A student completed a lab report. Which correctly describes the difference between the "Question" and "Hypothesis" sections
    9·2 answers
  • Which is the variable that the experimenter changes
    7·1 answer
  • A toy car has an initial acceleration of 2 m/s" across a horizontal surface after it is released from rest. After the car travel
    15·2 answers
  • An 8.00 g bullet is fired into a 250 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remai
    12·1 answer
  • What are some differences you can spot in a periodic table?
    12·1 answer
  • What do radio waves and microwaves have in common?
    5·2 answers
  • 6 real life applications of liquid pressure with pictures and explanation
    15·1 answer
  • What is centripetal force<br>hello​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!