Fundamentals of Physics - math word problems - page 23 of 50
Number of problems found: 985
- Engine performance
The car's engine develops a power of 1800 N. Find its performance if it travels evenly on a horizontal path at 48 km/h. - Cage gravitational energy
Find the potential gravitational energy of a 2000 kg tow cage relative to the bottom of an 850 m deep draw pit when the cage is on the surface. - G Force, mass A car with a weight of 20 kN travels at a speed of 54 km/h. What is its kinetic energy?
- Nail work
What work do we do if we pull out a 58 mm nail with an average force of 350 N? - Free fall 5
Jeremy accidentally dropped his toy stuffed animal from the balcony of his apartment on the fourth floor. The toy hit the ground at a velocity of 16.0 meters per second. At impact, it took 2.0 seconds for the toy's velocity to reach 0 meters per second. I - Shot casting
How many shots with a diameter of 2 mm can a gunsmith cast from 1 kg of lead? The density of lead is 11.4 g / cm3 - Tourist group meeting
From Tatranská Lomnica to Ždiar, 40 km apart, two groups of tourists went opposite each other. Pedestrians left Tatranská Lomnica at 9:00 AM at an average speed of 4 km/h. Cyclists from Ždiar at 9:30 at an average speed of 15 km/h. When will they meet? At - The body
A body slides down an inclined plane at an angle of α = π/4 = 45° to the horizontal, with friction causing a deceleration of a = 2.4 m/s². At what angle β must the plane be inclined so that, after a small push, the body slides at a constant speed? - Locomotive pressure
What is the pressure on the tracks when a 10-ton locomotive with eight wheels stands on it, and each wheel has a contact area of 4 cm²? - Circuit voltage
Calculate the closed-circuit voltage. Calculate the power on the resistors. R1 = 30 ohms, R2 = 10 ohms. I = 0.1 A. U =?. The resistors are connected in series, one after the other. - Bulb resistance
At a certain point, we measured a voltage of 4.5 V at a current of 150 mA at the bulb's terminals connected to the electrical circuit. What is the resistance of the bulb? - Atmospheric pressure
The area of the horizontal plate is 0.80 m². The atmospheric pressure around the plate is 1100 hPa. 1. How much pressure does the air exert on the plate from above? 2. What is its direction? 3. Is the magnitude of this force different if the plate is tilt - Balloon buoyancy force
The balloon filled with hot air has a volume of 1440 m³. How large a buoyancy force acted on the balloon in the air with a density of 1.3 kg/m³? - Glass density
Determine the density of sheet glass with dimensions 2 m x 2 m x 1 dm and a weight of 500 kg. - Ethanol turbine
How much power can we get if we pour ethanol on a mini turbine from a height of 1.5 m Volume Ethanol 0.2 m³. How much work does ethanol do? The casting time is 1.9 minutes. The density of ethanol is 789 kg/m². - The resistance What is the resistance of an aluminum wire, 0.2 km long and 10 mm in diameter?
- Zinc body heating
A zinc body has a volume of 20 dm³. How much heat is needed to warm it from 25 °C to 100 °C? What is the heat capacity C of the body (in J/K)? - Aluminum plate forces
An aluminum plate with a volume of 200 cm³ sinks in water. Determine the gravitational force exerted by the Earth on the plate. Determine the buoyant force that acts on a plate immersed in water. Compare the magnitudes of these forces and justify whether - Free fall How long and at what speed does the body fall to the ground during a free fall from a height of 35 m?
- Blue rock solution
Prepare 100 g of a 15% blue rock solution.
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