Fundamentals of Physics - math word problems - page 21 of 45
Number of problems found: 896
- Atmospheric 39931
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
- Buoyancy 39891
The balloon filled with hot air has a volume of 1440m³. How large a buoyancy force acted on the balloon in the air with a density of 1.3 kg/m³?
- Dimensions 39343
Determine the density of sheet glass with dimensions 2m x 2m x 1dm and a weight of 500kg.
- Ethanol 39281
How much power can we get if we pour ethanol on a mini turbine from a height of 1.5 m Volume Ethanol 0.2m³. 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?
- Temperature 38971
A zinc body has a volume of 20 dm³. What heat is needed to warm it from a temperature of 25 to 100 degrees Celsius? What is this body's heat capacity C (unit J/K)?
- Gravitational 38843
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?
- Solution 38391
Prepare 100g of a 15% blue rock solution.
- Copper wire
What is the weight in kg of copper wire 200 m long with a diameter of 0.6 cm if the density of copper is 8.8 kg/dm³?
- Rotary motion
Find the orbital time, rotational frequency, and angular rate of the second and minute hands on the watch.
- Mass point
Two equal forces of 30 Newtons act on a mass point. Find the magnitude of the resultant force if these forces form an angle of 42°.
- Separated 38223
What is the intensity of the electric field at a point that lies in the middle between two point charges Q1 = 5.10-5 C and Q2 = 7.10-5 C, which is separated by r = 20 cm? The charges are placed in a vacuum.
- Homogeneous 38201
The homogeneous roller weighs 7.36 kg and has a volume of 8 dm³. Use the MFCH tables to select the fluids in which the specified body declining blue, it floats.
- Instantaneous 37961
A plane wave has an amplitude u0 = 40 cm and a frequency f = 10 Hz. The speed of wave propagation through the medium is v = 40 cm. S-1. At a distance x = 10 cm from the starting point, the wave has an instantaneous deflection u = 15 cm. How long does it t
- Constant 37773
Katka left the store with a heavy purchase at a constant speed of 0.5 m. S-1. Her brother Michal ran to help her at a constant speed of 3.25m. S-1. How many meters did Katka have to walk with her shopping before meeting Michal if the store is 300 m from t
- Earth rotation
How fast is the place on the Earth's equator moving if the Earth's radius is 6378 km?
- Completely 37433
Find the magnitude of the buoyancy force acting on a body with a volume of 1 dm³ whole immersed: a) in water b) in ethanol.
- Subjected 37351
The football player kicked a 400 g ball with a force of 480 N during a penalty. How fast did the ball again if it was subjected to an impact force of 0.01 s?
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