Themes, topics - math word problems - page 52 of 174
Number of problems found: 3474
- Loader pressure change
How does the pressure value change when we load a loader with the same weight as the car? - Truck rail pressure
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? - Stone lever force
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? - Wheel force lever
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 taking root 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 3 white? b) all will be red - 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 kilometre in an hour. The turtle is 1/5 of a kilometre away from a pond. How long will it take the turtle to reach the pond at this speed? - Two companies
Two companies completed a job together in 100 days. The first company alone could complete the job in 150 days. How long would the second company take to complete the job alone? - Resistor voltage current
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 2.5 V, a current I1= 20 mA flows through the resistor. What will the voltage be at the resistor's ends when the current I2= 1,2 A 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 temp - Fence paint removal
Mr. Carl will remove the old paint from the fence in 8 hours. Mrs. Annie will paint the fence a new color in 6 hours. They will show if the work on the fence will progress if Mr. Carl starts at eight in the morning and Mrs. Annie only three hours later. D - Bronze
How much tin is in 3.6 kg of bronze if it contains 15%? - Trapezoid angle construction
Sestroj trapezoid ABCD, if a = 8 cm, b = 5 cm, alpha = 60 °, beta = 75 ° - Manganese Manganese bronze contains the following metals per pound: copper 0.89 lb, tin 0.10 lb, and manganese 0.01 lb. How much copper is in a shaft that weighs 235 pounds?
- Diamond angle construction
Construct an ABCD diamond with side a = 4.8 cm, and the angle at vertex B is 60 ° - Radio radius Two friends have shortwave radios with a range of 13 km. The first of them travels by train at a speed of 48 km per hour along a straight section of track, from which the second of the friends is 5 km away. How long will radio friends be allowed for both
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