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Wind with a velocity 100 km/h blows normally against one of the walls of a house with an area of 108 m^2. Calculate the force exerted on the wall if the air moves parallel to the wall after
25
Sep
Wind with a velocity 100 km/h blows normally against one of the walls of a house with an area of 108 m^2. Calculate the force exerted on the wall if the air moves parallel to the wall after Wind with a velocity 100 km/h blows normally against one of the walls of a house with [...]
A U-shaped smooth wire has a semi-circular bending between A and B as shown in Fig. 6.13. A bead of mass m moving with uniform speed v through the wire uniform speed v through the wire
25
Sep
A U-shaped smooth wire has a semi-circular bending between A and B as shown in Fig. 6.13. A bead of mass m moving with uniform speed v through the wire uniform speed v through the wire A U-shaped smooth wire has a semi-circular bending between A and B as shown in Fig. 6.13. A bead [...]
During a heavy rain, hailstones of average size 1.0 cm in diameter fall with an average speed of 20 m/s. Suppose 2000 hailstones strike every square meter of a 10 m * 10 m roof perpendicularly in one
25
Sep
During a heavy rain, hailstones of average size 1.0 cm in diameter fall with an average speed of 20 m/s. Suppose 2000 hailstones strike every square meter of a 10 m * 10 m roof perpendicularly in one During a heavy rain hailstones of average size 1.0 cm in diameter fall with an average speed [...]
The magnitude of the net force exerted in the x direction on a 2.50 kg particle varies with time as shown in Fig. 6.12. Find (a) the impulse of the force, (b) the final velocity the particle attains
25
Sep
The magnitude of the net force exerted in the x direction on a 2.50 kg particle varies with time as shown in Fig. 6.12. Find (a) the impulse of the force, (b) the final velocity the particle attains (b) the final velocity the particle attains The magnitude of the net force exerted in the x [...]
A 3 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0 with the surface of the wall. The ball bounces off the same speed and same angle (Fig. 6.11). If the ball was in contact with the wall for 0.2
25
Sep
A 3 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0 with the surface of the wall. The ball bounces off the same speed and same angle (Fig. 6.11). If the ball was in contact with the wall for 0.2 Water falls without splashing at a rate [...]
A liquid of density rho is flowing with a speed v through a pipe of cross sectional area A. The pipe is bent in the shape of a right angle as shown. What force should be exerted on the pipe at
25
Sep
A liquid of density rho is flowing with a speed v through a pipe of cross sectional area A. The pipe is bent in the shape of a right angle as shown. What force should be exerted on the pipe at A liquid of density rho is flowing with a speed v through a pipe [...]
Water falls without splashing at a rate of 0.250 L/s from a height of 2.60 m into a 0.750 kg bucket on a scale. If the bucket is originally empty, what does the scale read 3 s after water starts to
25
Sep
Water falls without splashing at a rate of 0.250 L/s from a height of 2.60 m into a 0.750 kg bucket on a scale. If the bucket is originally empty, what does the scale read 3 s after water starts to Water falls without splashing at a rate of 0.250 L/s from a height of [...]
A rubber ball of mass 50 g falls from a height of 5 m and rebounds to a height of 1.25 m. Find the impulse and the average force between the ball and the ground if the time for which they are in contact was 0.1 s.
25
Sep
A rubber ball of mass 50 g falls from a height of 5 m and rebounds to a height of 1.25 m. Find the impulse and the average force between the ball and the ground if the time for which they are in contact was 0.1 s. 48). The magnitude of the average velocity is [...]
Figure 6.8 shows the position-time graph of a particle of mass 0.04 kg. Suggest a suitable physical context for this motion. What is the time between two consecutive impulses received
25
Sep
Figure 6.8 shows the position-time graph of a particle of mass 0.04 kg. Suggest a suitable physical context for this motion. What is the time between two consecutive impulses received Figure 6.8 shows the position-time graph of a particle of mass 0.04 kg. Suggest a suitable physical context for this motion. What is the time [...]
As shown in Fig. 6.7, two identical balls strike a rigid wall with equal speeds but at different angles of incidence. They are reflected back without any loss in speed. a. Determine the direction of force
25
Sep
As shown in Fig. 6.7, two identical balls strike a rigid wall with equal speeds but at different angles of incidence. They are reflected back without any loss in speed. a. Determine the direction of force As shown in Fig. 6.7 two identical balls strike a rigid wall with equal speeds but at different angles [...]