Themes, topics - math word problems - page 50 of 168

Number of problems found: 3358

Conductor resistance
Calculate the resistance value of the electrical conductor if it is connected to a voltage of 12 V and an electric current of 0.3 A passes through it.
Resistance 62104
The iron is connected to a 230 V power supply with a current of 5000 mA. Calculate the electrical resistance of the iron.
Parallelogram - area
OPRS parallelogram with OP side 4 cm long, OS side 5 cm long, angle at the top P is 100°. What is its area?
Project 62074
A 3.5 cm-long line shows the 350 m-long road on the plan. What is the project's scale?
Pressure 61954
How does the pressure value change when we load a loader with the same weight as the car?
Centimeters 61934
How much pressure on the rails will cause an empty truck weighing 20 tons if the contact area of all wheels and rails is 16 square centimeters?
Supported 61914
A person lifts a stone weighing 285 kg with the help of a lever that is supported at a distance of 30 cm from the stone. A person acts on the lever at a distance of 90 cm from the support. How much force does a person have to use to lift a stone?
Gravitational 61894
The center of force on the wheel is 1.2 m from the axis of rotation, and the load is attracted by the earth's gravitational force equal to 800 newtons at a distance of 40 cm from the axis of rotation. How much force F2 does the worker lift the wheel?
Perimeter - triangle
Construct triangle ABC when we know a + b + c (perimeter), height to side c, and angle gamma.
Acceleration and force
On a sphere weighing 100 g, which lies on a horizontal plate, a force acts in the horizontal direction, which gives it an acceleration of 20 cm/s². Find the magnitude of the force.
Newton law
At what acceleration does a train with a weight of 800 t start if the traction force of the locomotive is 2 * 10⁵ N?
We are planting
We are planting 2 types of roses (white and red). Experience shows that the probability of a red rose sprouting is 0.7. A total of 5 seedlings are planted. What is the probability that: a) the first 2 will be red and the next white b) all will be red c) n
The cyclist - avg speed
The cyclist make a distance of 25 km at an average speed of 20 km/h. How long did the trip take him (in hours and minutes)?
A turtle 2
A turtle can walk 1/12 of a kilometer in an hour. The turtle is 1/5 of a kilometer away from a pond. How long will it take the turtle to reach the pond at this speed?
Two companies
The two companies did work together for 100 days. The first company would do it in 150 days. How many days would the work take the second company?
Electrical 61534
A current of 5 mA flows through a resistor with an electrical resistance of 600 Ω. What electrical voltage do we measure between the resistor terminals?
Voltage - Kirchoff laws
At a voltage of 2.5V, a current I1= 20mA flows through the resistor. What will the voltage be at the resistor's ends when the current I2= 1,2A passes through it?
Air bubble
The air bubble at the bottom of the lake at a depth of h = 21 m has a radius of r1 = 1 cm at a temperature of t1 = 4°C. The bubble rises slowly to the surface, and its volume increases. Calculate its radius when it reaches the lake's surface, with a tempe
Progress 61444
Mr. Karel will remove the old paint from the fence in 8 hours. Mrs. Anka will paint the fence a new color in 6 hours. They will show if the work on the fence will progress if Mr. Karel starts at eight in the morning and Mrs. Anka only three hours later. D
Bronze
How much tin is in 3.6 kg of bronze if it contains 15%?

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