The flowers of the bunchberry plant open with astonishing force and speed, with pollen grains accelerating...
The flowers of the bunchberry plant open with astonishing force and speed, with pollen grains accelerating from rest to 7.5 m/s.
Part A What impulse is delivered to a 1.0×10−10kg pollen grain? Express your answer with the appropriate units. J =
Part B What is the average force if this impulse is delivered in 0.30 ms? Express your answer with the appropriate units. Fav =
Part C Determine the ratio of that force to the weight of the pollen grain.
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The flowers of the bunchberry plant open with astonishing force
and speed, with pollen grains accelerating...
The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains...
The flowers of the bunchberry plant open with astonishing force and speed, causing the pollen grains to be ejected out of the flower in a mere 0.30 ms at an acceleration of 2.5×104 m/s2 . If the acceleration is constant, what impulse is delivered to a pollen grain with a mass of 1.1×10−7 g ?
Determine the normal stress at point D that acts perpendicular to the grains. Express your answer...
Determine the normal stress at point D that acts perpendicular to the grains. Express your answer using three significant figures and include the appropriate units. Determine the normal and shear stresses at point D that act perpendicular and parallel, respectively, to the grains. The grains at this point make an angle of 30° with the horizontal as shown in the figure below. Point D is located just to the left of the force P 13.5 kN (Figure 1) o2,-1 Value...
Force of a Baseball Swing. A baseball has mass 0.147 kg . a) If the velocity...
Force of a Baseball Swing. A baseball has mass 0.147 kg . a) If the velocity of a pitched ball has a magnitude of 46.0 m/s and the batted ball's velocity is 53.5 m/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat. Express your answer to three significant figures and include the appropriate units. b) If the ball remains in contact with the...
Constants A person pushes a 12.5 kg lawn mower at constant speed with a force of...
Constants A person pushes a 12.5 kg lawn mower at constant speed with a force of 81.0 N directed along the handle, which is at an angle of 45.0° to the horizontal Part A Draw the free-body diagram showing all forces acting on the mower. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. + 2 O No elements selected We were unable to transcribe this imageConstants - Part B A...
To five significant figures, what accelerating potential difference AV is required to detect the ion 0...
To five significant figures, what accelerating potential difference AV is required to detect the ion 0 ? The masses of the atoms are shown in the table; the mass of the missing electron is less than 0.001 u and is not relevant at this level of precision. Use the following constants: 1 u = 1.6605 x 10-27 kg, e = 1.6022 x 10-19 C. (Figure 1) shows a mass spectrometer, an analytical instrument used to identify the various molecules in...
One study suggests that a brain concussion can occur if a person's head is subjected to...
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g, where g is the acceleration of gravity. Part A If the mass of the person's head is 4.6 kg, what is the magnitude of the forco? Express your answer to two significant figures and include appropriate units. ? Value Units Submit Request Answer Part B If the impulse delivered to the person's head is 21 kg. m/s, over...
A horizontal force of 70 N is required to push a bookcase across a floor at...
A horizontal force of 70 N is required to push a bookcase across a floor at a constant velocity. Part A What is the net force acting on the bookcase? Express your answer to two significant figures and include the appropriate units. Part B How much is the friction force that acts on the sliding bookcase? Express your answer to two significant figures and include the appropriate units. Part C How much friction acts on the bookcase when it is...
can someone work this out please? Problem 4.06 601 A person has a reasonable chance of...
can someone work this out please?
Problem 4.06 601 A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's." Part A Calculate the magnitude of the force on a 73- kg person accelerating at this rate. Express your answer to two significant figures and include the appropriate units. μΑ Value Units Submit Request Answer Part B What distance is traveled if brought to rest at this rate from 105 km/h...
1. A 25-g rifle bullet traveling 240 m/s embeds itself in a 3.0-kg pendulum hanging on...
1. A 25-g rifle bullet traveling 240 m/s embeds itself in a 3.0-kg pendulum hanging on a 2.5-m-long string, which makes the pendulum swing upward in an arc. (Figure 1) A) Determine the vertical component of the pendulum's maximum displacement. Express your answer to two significant figures and include the appropriate units. B) Determine the horizontal component of the pendulum's maximum displacement. Express your answer to two significant figures and include the appropriate units. 2. A 11-kg hammer strikes a...
One study suggests that a brain concussion can occur if a person's head is subjected to...
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g where is the acceleration of gravity Part A If the mass of the person's head is 4.7 kg what is the magnitude of the force? Express your answer to two significant figures and include appropriate units. 2800 N Previous Answers ✓ Correct Part B w the impulse delivered to the person's head is 21 kgm/s over what time...
Determine the normal stress at point D that acts perpendicular to the grains. Express your answer using three significant figures and include the appropriate units. Determine the normal and shear stresses at point D that act perpendicular and parallel, respectively, to the grains. The grains at this point make an angle of 30° with the horizontal as shown in the figure below. Point D is located just to the left of the force P 13.5 kN (Figure 1) o2,-1 Value...
Constants A person pushes a 12.5 kg lawn mower at constant speed with a force of 81.0 N directed along the handle, which is at an angle of 45.0° to the horizontal Part A Draw the free-body diagram showing all forces acting on the mower. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. + 2 O No elements selected We were unable to transcribe this imageConstants - Part B A...
To five significant figures, what accelerating potential difference AV is required to detect the ion 0 ? The masses of the atoms are shown in the table; the mass of the missing electron is less than 0.001 u and is not relevant at this level of precision. Use the following constants: 1 u = 1.6605 x 10-27 kg, e = 1.6022 x 10-19 C. (Figure 1) shows a mass spectrometer, an analytical instrument used to identify the various molecules in...
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g, where g is the acceleration of gravity. Part A If the mass of the person's head is 4.6 kg, what is the magnitude of the forco? Express your answer to two significant figures and include appropriate units. ? Value Units Submit Request Answer Part B If the impulse delivered to the person's head is 21 kg. m/s, over...
can someone work this out please?
Problem 4.06 601 A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's." Part A Calculate the magnitude of the force on a 73- kg person accelerating at this rate. Express your answer to two significant figures and include the appropriate units. μΑ Value Units Submit Request Answer Part B What distance is traveled if brought to rest at this rate from 105 km/h...
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g where is the acceleration of gravity Part A If the mass of the person's head is 4.7 kg what is the magnitude of the force? Express your answer to two significant figures and include appropriate units. 2800 N Previous Answers ✓ Correct Part B w the impulse delivered to the person's head is 21 kgm/s over what time...
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