Which chart correctly describes the properties of magnets and electromagnets?
a.
property electromagnet magnet
permanent magnet x
temporary magnet x x
magnetic field created by aligning domains x
moving electric charge produces magnetic field x
b.
property electromagnet magnet
permanent magnet x
temporary magnet x x
magnetic field created by aligning domains x
moving electric charge produces magnetic field x
c.
property electromagnet magnet
permanent magnet x
temporary magnet x x
magnetic field created by aligning domains x
moving electric charge produces magnetic field x
d.
property electromagnet magnet
permanent magnet x
temporary magnet x x
magnetic field created by aligning domains x
moving electric charge produces magnetic field x

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.