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
Vika [28.1K]
3 years ago
9

Find the change in velocity of a 369 g hockey puck subject to the force shown below.

Physics
1 answer:
Elena-2011 [213]3 years ago
3 0

Answer:

The change in velocity is 15.83 [m/s]

Explanation:

Using the Newton's second law we have:

ΣF = m*a

The force in the graph is 185 N, therefore:

185=0.369*a\\Where\\a=acceleration made it by the force [m/s^2]

a=501.35[m/s^2]

Now using the following kinematic equation:

V^{2}=Vi^{2} + 2*a*(x-xi) \\where\\V=final velocity [m/s]\\Vi= initial velocity [m/s] = 0 the hockey disk is in rest when receives the hit.\\ x = Final position [m] = 0.4 m\\xi = initial position [m] = 0.15m\\

Now replacing the values:

V^{2}=0 + 2*501.35*(0.4-0.15)\\ \\V= 15.83[m/s]

You might be interested in
What parts of an atom determines which element it is?
uysha [10]

Explanation:

The protons determines the atomic number which helps in identifying an atom of an element

4 0
3 years ago
Read 2 more answers
What is the voltage in a circuit that has a current of 10.0 amps and a resistance of 28.5 ohms?
marin [14]
Voltage = Current (I) × Resistance (R)
V = 10 × 28.5 = 285v
6 0
3 years ago
An 800-kHz radio signal is detected at a point 8.5 km distant from a transmitter tower. The electric field amplitude of the sign
Temka [501]

Answer:

Explanation:

Given that,

Frequency of radio signal is

f = 800kHz = 800,000 Hz.

Distance from transmitter

d = 8.5km = 8500m

Electric field amplitude

E = 0.9 V/m

The average energy density can be calculated using

U_E = ½•ϵo•E²

Where ϵo = 8.85 × 10^-12 F/m

Then,

U_E = ½ × 8.85 × 10^-12 × 0.9²

U_E = 3.58 × 10^-12 J/m²

The average electromagnetic energy density is 3.58 × 10^-12 J/m²

6 0
3 years ago
Read 2 more answers
Kid A has jumped off the sled! (RIP)
balandron [24]

Answer:

46.45 m/s

Explanation:

Total momentum before jump = Total momentum after jump

11.7 * ( 36.7 + 45.2 ) = ( 36.7 * (-31.1) ) + ( 45.2 * v )

v*45.2 - 1141.37 = 958.23

v = 2099.6/45.2 = 46.45

5 0
3 years ago
What is 6,000 in scientific notation
Lostsunrise [7]

6,000 in scientific notation is 6 x 10^3.

6 x 10^3 = 6,000

Hope this helps ! <3

3 0
3 years ago
Other questions:
  • Which of the following is the best name for N2O? dinitrogen monoxide nitrogen monoxide nitrogen oxide nitrogen oxygen
    7·2 answers
  • What statement is true about a spring?
    12·2 answers
  • Could anyone help me out ?
    13·2 answers
  • The nonmetals include which of the following groups? Use the periodic table to answer the question. Check all that apply. haloge
    11·1 answer
  • If a gas has a gage pressure of 156 kPa, it is absolute pressure is approximately
    13·1 answer
  • ____ charges are attract each other
    15·2 answers
  • Como es el movimiento uniforme de los pedales de una bicicleta? a) con respeto a la Tierra b) con respecto al ciclista.
    10·1 answer
  • What is the power dissipated by a 50.0 ohm resistor?
    11·1 answer
  • List two things you should not do when encountering a funeral procession?
    12·1 answer
  • Which of the following statements about electromagnetic radiation it true? A.electromagnetic waves with long wavelength are more
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!