Question 2 (a) Using the component method, in adding the two vectors: 14 N in the...
Question 2 (a) Using the component method, in adding the two
vectors: 14 N in the x direction and 13 N at 45° elevation,
(b) : (i) Calculate the momentum of a 8000 kg locomotive travelling
at 12 m/s. (ii) This locomotive collides with a stationary carriage
of mass 2500 kg and they shunt (stick together). What would be the
velocity of the combination, assuming there is negligible friction.
(iii) Would kinetic energy be conserved in this collision? Show
this by calculating kinetic energy before and after.
c (i) Describe kinetic energy and gravitational potential energy, and writing down an equation for each. (ii) The Tower of Terror accelerates a 6000 kg roller coaster horizontally up to a velocity of 161 km/h, and uses this kinetic energy to climb a tower: Calculate the initial kinetic energy just after being accelerated. (iii) Use this energy to calculate the maximum height the roller coaster will rise up the tower. (Assume friction is negligible
D Two identical +15 mC point charges are 16 cm apart as shown in
Figure 6. (i) Would the electrostatic force between the charges be
attractive or repulsive? (ii) Redraw these charges showing the
surrounding electric field lines (iii) Use Coulomb's law to
calculate the magnitude of this force. (iv) What would be the force
if the distance between them were doubled A laser is used to
produce a beam of green laser light of wavelength 518 nm (ii)
Calculate the frequency of this laser light. (iii) Use the
refractive index of water (1.33) to calculate the speed of the
light as it travels through water.
(E) What beat frequency is heard when two sounds of frequencies 600
and 603 Hz of roughly equal intensity are being produced. (i) A
mosquito flaps its wings 600 times per second, producing an
annoying buzz at 600 Hz. Calculate the wavelength of the sound
assuming the speed of sound in air is 344 m/s. ii Calculate the
energy of a single photon from a blue laser of wavelength 633
nm
Homework Answers
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Question 2 (a) Using the component method, in adding the two
vectors: 14 N in the...
I needed help with problems 2,3 and 4! please help exam is tomorrow im going in circles with thes...
i needed help with problems 2,3 and 4! please help exam is
tomorrow im going in circles with these problems
1. A 5.0-watt laser pointer emits light of 400 nm wavelength. How many photons are emi each second? Express your answer as a multiple of 1.0 x ted E-nt e (b) 4.6 e) None of these c- 5.0 xIU Would have to the frequency of light (as a multiple of 1.0 x 1015 Hz) incident on a metal function is...
(a) (4 marks) Unpolarised light is incident on a set of three polarising sheets as shown...
(a) (4 marks) Unpolarised light is incident on a set of three polarising sheets as shown in the figure. The polarising directions of the first and third sheets make angles 01 = 0.0°, and 03 = 90.0° to the vertical, respectively. Find the fraction of the incident intensity that passes through the set of three sheets when 02 is (i) 0°, (ii) 90°, and (iii) 45.00 Air Glass (b) (6 marks) Two rays of light are propagating through a glass...
I need help with question 9. Velocity of light in air 3 x 10 ms Speed...
I
need help with question 9.
Velocity of light in air 3 x 10 ms Speed of sound in air 340 ms 5. a. Calculate the frequency of a wave in the visible spectrum of wavelength 600 nm. [2 b. The wave is incident upon a glass surface making an angle of incidence of 40. It is refracted at an angle of 25. Calculate: i. The refractive Index of glass. 2 ii. The velocity of light in the glass. 2...
Please help me answer this question it 1 question from A to J. PHY HW. •...
Please help me answer this question it 1 question from A to J.
PHY HW.
• Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must be specified for any isolated number, not just your final...
A bobsleigh racing team push starts a sleigh, starting from rest and accelerating it over a...
A bobsleigh racing team push starts a sleigh, starting from rest and accelerating it over a time of 6.00 s to a speed of 11.0 m s−1 before jumping into the sleigh and beginning their descent of the bobsleigh run. The finish line is 112 m below the point where the team jump into the sleigh. The combined mass of the sleigh and team is 600 kg. (i) Calculate the combined kinetic energy of the sleigh and team just as...
Please help answer all of question 6, thanks! Rotational Dynamics Assignment (200 Points) • Due Friday,...
Please help answer all of
question 6, thanks!
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to...
A(n) 14-kg particle has energy 92,725 kg (2. Calculate gamma (y). Question 16 1 pts A...
A(n) 14-kg particle has energy 92,725 kg (2. Calculate gamma (y). Question 16 1 pts A particle has y=2,258. Calculate c-v in m/s. (I would have asked for 1 - v/c, making the answer dimensionless, but the system doesn't seem to take numbers that small. Gamma is chosen to make the particle extremely close to the speed of light.) If your calculator gives problems, you might want to solve the appropriate equation for c-vor c(1- v/c) and use an approximation....
Please answer all of question 3 Rotational Dynamics Assignment (200 Points) • Due Friday, July 31...
Please answer all of question
3
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly...
3 (b) The energy of a Bohr atom in the n-th excited state is given by the formula E--a2mc2 2,7, where α-e2/(4πέρ,10hc)-1 /137, m is the electron mass and e denotes the electron electric charge. i) Wh...
3 (b) The energy of a Bohr atom in the n-th excited state is given by the formula E--a2mc2 2,7, where α-e2/(4πέρ,10hc)-1 /137, m is the electron mass and e denotes the electron electric charge. i) Why is the total energy negative? Explain briefly your answer. ii) What is the radius of the electron in the n-th excited state in the Bohr atom? To answer that correctly follow the next steps Use Bohr's angular momentum quantization principle to obtain an...
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in...
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must...
i needed help with problems 2,3 and 4! please help exam is
tomorrow im going in circles with these problems
1. A 5.0-watt laser pointer emits light of 400 nm wavelength. How many photons are emi each second? Express your answer as a multiple of 1.0 x ted E-nt e (b) 4.6 e) None of these c- 5.0 xIU Would have to the frequency of light (as a multiple of 1.0 x 1015 Hz) incident on a metal function is...
(a) (4 marks) Unpolarised light is incident on a set of three polarising sheets as shown in the figure. The polarising directions of the first and third sheets make angles 01 = 0.0°, and 03 = 90.0° to the vertical, respectively. Find the fraction of the incident intensity that passes through the set of three sheets when 02 is (i) 0°, (ii) 90°, and (iii) 45.00 Air Glass (b) (6 marks) Two rays of light are propagating through a glass...
I
need help with question 9.
Velocity of light in air 3 x 10 ms Speed of sound in air 340 ms 5. a. Calculate the frequency of a wave in the visible spectrum of wavelength 600 nm. [2 b. The wave is incident upon a glass surface making an angle of incidence of 40. It is refracted at an angle of 25. Calculate: i. The refractive Index of glass. 2 ii. The velocity of light in the glass. 2...
Please help me answer this question it 1 question from A to J.
PHY HW.
• Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must be specified for any isolated number, not just your final...
Please help answer all of
question 6, thanks!
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to...
A(n) 14-kg particle has energy 92,725 kg (2. Calculate gamma (y). Question 16 1 pts A particle has y=2,258. Calculate c-v in m/s. (I would have asked for 1 - v/c, making the answer dimensionless, but the system doesn't seem to take numbers that small. Gamma is chosen to make the particle extremely close to the speed of light.) If your calculator gives problems, you might want to solve the appropriate equation for c-vor c(1- v/c) and use an approximation....
Please answer all of question
3
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly...
3 (b) The energy of a Bohr atom in the n-th excited state is given by the formula E--a2mc2 2,7, where α-e2/(4πέρ,10hc)-1 /137, m is the electron mass and e denotes the electron electric charge. i) Why is the total energy negative? Explain briefly your answer. ii) What is the radius of the electron in the n-th excited state in the Bohr atom? To answer that correctly follow the next steps Use Bohr's angular momentum quantization principle to obtain an...
Rotational Dynamics Assignment (200 Points) • Due Friday, July 31 at 5:00 pm Equations are in a separate document entitled “Equations for Rotational Dynamics Assignment” • Moments of inertia formulas are provided on the last page of this document • Show all of your work when solving equations. It is not sufficient to merely have a correct numerical answer. You need to have used legitimate equations and algebra. You also need to have correctly used the data. • Units must...
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