Lab Report Physics
Student:
(Be sure to look over all your notes and be sure to know the following things) 1. Define Temperature, thermal energy and heat.
2. A 1.00 x 10²g mass of tungsten at 100°C is placed in 2.00 x 10²g of water at 20.0°C. The mixture reaches equilibrium at 21.6°C. Calculate the specific heat of tungsten. Cw = 4180 J/kg°C
C= 171 J/kgOC 3. A certain metal has a specific heat of 400 J / kg oC. It absorbs 8000 J of thermal energy which causes its temperature to raise 10oC. How much mass of the metal is present?
M=2kg 4. How is the direction of an electric field defined?
5. What happens to the strength of an electric field when the charge on the test charge is halved?
6. What happens to the electric potential …show more content…
A 16.0 ohm and a 20.0 ohm resistor are connected in parallel. A difference in potential of 40.0 V is applied to the combination. p. Compute the equivalent resistance of the parallel circuit. 8.9 q. What is the total current in the circuit? 4.5V r. What is the current in the 16.0ohm resistor? 2.5 A
17. Describe how a permanent magnet differs from a temporary magnet.
18. A wire that is 0.50m and carrying a current of 8.0A is at a right angle to a uniform magnetic field. The force on the wire is .40N. What is the strength of the magnetic field?
B=0.1 T 19. A beam of electrons moves at right angles to a magnetic field of 6.0 x 10⁻² T. The electrons have a velocity of 2.5 x 10⁶ m/s. What is the magnitude of the force on each electron?
F=2.4x10-14 N
20. An electric wire inside the wall of a building carries a dc current of 25 A vertically upward. What is the magnetic field due to this current at a point10 cm due north of the wire?
B=5.0x10-5T 21. Describe interference. Is interference a property of only some types of waves or all types of waves?
22. What happens to a spring at the nodes of standing waves?
23. Water waves in a lake travel 3.4m in 1.8s. The period of oscillation in …show more content…
What is the speed of the water waves? 1.9m/s t. What is their wavelength? 2.1m
24. The frequency of yellow lights is 5.1 x 10¹⁴ Hz. Find the wavelength of yellow light. The speed of light is 3.0 x 10⁸ m/s.
5.9x10-7 m 25. If the pitch of sound is increases, what are the changes in the following? u. the frequency v. the wavelength w. the wave velocity x. the amplitude of the wave 26. The sound from a trumpet travels at 351m/s in air. If the frequency of the note is 298Hz, what is the wavelength of the sound wave?
1.18m
27. A ray of light strikes a mirror at an angle of 38° to the normal. What is the angle that the reflected angle makes with the normal?
38o
28. A ray of light incident upon a mirror makes an angle of 36° with the mirror. What is the angle between the incident ray and the reflected ray?
108o 29. An object is placed 15 cm from a converging lens with a focal length of 10 cm. Determine the image location. Draw the ray diagram for this situation and describe the
(Be sure to look over all your notes and be sure to know the following things) 1. Define Temperature, thermal energy and heat.
2. A 1.00 x 10²g mass of tungsten at 100°C is placed in 2.00 x 10²g of water at 20.0°C. The mixture reaches equilibrium at 21.6°C. Calculate the specific heat of tungsten. Cw = 4180 J/kg°C
C= 171 J/kgOC 3. A certain metal has a specific heat of 400 J / kg oC. It absorbs 8000 J of thermal energy which causes its temperature to raise 10oC. How much mass of the metal is present?
M=2kg 4. How is the direction of an electric field defined?
5. What happens to the strength of an electric field when the charge on the test charge is halved?
6. What happens to the electric potential …show more content…
A 16.0 ohm and a 20.0 ohm resistor are connected in parallel. A difference in potential of 40.0 V is applied to the combination. p. Compute the equivalent resistance of the parallel circuit. 8.9 q. What is the total current in the circuit? 4.5V r. What is the current in the 16.0ohm resistor? 2.5 A
17. Describe how a permanent magnet differs from a temporary magnet.
18. A wire that is 0.50m and carrying a current of 8.0A is at a right angle to a uniform magnetic field. The force on the wire is .40N. What is the strength of the magnetic field?
B=0.1 T 19. A beam of electrons moves at right angles to a magnetic field of 6.0 x 10⁻² T. The electrons have a velocity of 2.5 x 10⁶ m/s. What is the magnitude of the force on each electron?
F=2.4x10-14 N
20. An electric wire inside the wall of a building carries a dc current of 25 A vertically upward. What is the magnetic field due to this current at a point10 cm due north of the wire?
B=5.0x10-5T 21. Describe interference. Is interference a property of only some types of waves or all types of waves?
22. What happens to a spring at the nodes of standing waves?
23. Water waves in a lake travel 3.4m in 1.8s. The period of oscillation in …show more content…
What is the speed of the water waves? 1.9m/s t. What is their wavelength? 2.1m
24. The frequency of yellow lights is 5.1 x 10¹⁴ Hz. Find the wavelength of yellow light. The speed of light is 3.0 x 10⁸ m/s.
5.9x10-7 m 25. If the pitch of sound is increases, what are the changes in the following? u. the frequency v. the wavelength w. the wave velocity x. the amplitude of the wave 26. The sound from a trumpet travels at 351m/s in air. If the frequency of the note is 298Hz, what is the wavelength of the sound wave?
1.18m
27. A ray of light strikes a mirror at an angle of 38° to the normal. What is the angle that the reflected angle makes with the normal?
38o
28. A ray of light incident upon a mirror makes an angle of 36° with the mirror. What is the angle between the incident ray and the reflected ray?
108o 29. An object is placed 15 cm from a converging lens with a focal length of 10 cm. Determine the image location. Draw the ray diagram for this situation and describe the