The body placed on a car as shown in the figure is pulled by a force of , and the car moves with it. What force accelerates the car?

Which of the following is a unit of force?

Can a straight, current-carrying coil be used as a compass?

A body slides down a 30 degree slope with zero initial velocity. A second, 45 degree slope faces the first slope, so the body will slide up that slope after reaching the bottom of the first. Assuming that the body can change between slopes smoothly and that there is no friction, what height will the body reach on the second slope?

Olgu , , ja suvalised hulgad. Olgu teada, et ja . Märkida kõik seosed, mis sellest järelduvad.

Olgu Fibonacci arvud, st  ja ning iga naturaalarvu korral .

Vaatleme predikaati

on paarisarv.

Me oleme tõestanud, et

1. on tõene,

2. iga korral, kui on tõene, siis ka on tõene.

Märkida kõik tõesed väited.

Olgu meil vaja näidata, et väide kehtib iga naturaalarvu korral. Märgi kõik väited, mis on piisavad selle järelduse tegemiseks.

Some desert insects collect the water they need to survive by pointing their abdomens to the sky during a certain part of the day so that vapor can condense on them. Which part of the day is this?