![subject](/tpl/images/cats/fizika.png)
The figure below shows a very fine current-carrying (L × w) = (4 cm × 1 cm) rectangular wire loop being levitated by a current-carrying wire h = 3 mm from its top edge. The combined mass of the wire loop and the battery driving the I2 = 0.5 A current through it (not pictured) is m = 0.23 g. What is the current through the straight wire, I1?
1 个
2) An iron atom has a mass of m = 9.273 × 10−26 kg, permanent magnetic dipole moment of M = 1.8 × 10−23 Am2 , and is approximately spherical with radius 1.4 × 10−10 m. Suppose that an iron atom is held in place so that its magnetic dipole moment is perpendicular to Earth’s magnetic field (B = 5.1×10−6 T). What is its angular acceleration when first released?
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 21.06.2019 18:30
An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 12:30
Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=
Answers: 2
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:00
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
Answers: 1
You know the right answer?
The figure below shows a very fine current-carrying (L × w) = (4 cm × 1 cm) rectangular wire loop be...
Questions
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2020 22:20
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2020 22:20
![question](/tpl/images/cats/User.png)
Engineering, 30.12.2020 22:20
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.12.2020 22:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2020 22:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 30.12.2020 22:20
![question](/tpl/images/cats/biologiya.png)
Biology, 30.12.2020 22:20
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2020 22:20
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.12.2020 22:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2020 22:20